Knock on the Happiness Door - Asian drama recommendation
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Knock on the Happiness Door(幸福还会来敲门)

2020China
Age GapAge GapDoctor Male LeadLifeOlder Man-Younger WomanPolice Officer Female LeadRomance

A tale of self-discovery unfolds as a doctor and a policewoman dedicate themselves to their ambitions and discover love along the way. Huang Zi Li, facing numerous challenges, relocates from the Southwest to pursue a fresh start in the bustling metropolis. Fang Yan, a determined policewoman, strives to excel in her profession. Initially at odds, the two eventually find themselves drawn to each other amidst constant clashes. (ChineseDrama.info)

Asian dramas like
Knock On The Happiness Door

Recommendation: May-December Love similar to Knock on the Happiness Door
50%Match
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May-December Love(大丈夫)

2014China
Age GapAge GapOlder Man-Younger WomanRomanceComedyFamily

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, Older Man-Younger Woman, and Romance themes with a 50% similarity match.

Gu Da Hai's youngest daughter, who is in her thirties, develops romantic feelings for her graduate instructor, a man who is around the same age as her father, leading to significant complications

Recommendation: Coffee Cat Mama similar to Knock on the Happiness Door
50%Match
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Coffee Cat Mama(貓屎媽媽)

2013Hong Kong
Age GapOlder Man-Younger WomanRomanceComedyDrama

Like Knock on the Happiness Door, this drama also features Age Gap, Older Man-Younger Woman, and Romance themes with a 50% similarity match.

In order to honor her deceased father's wishes, BIN KWAI WOR established a unique coffee shop where she crossed paths with BAO CHI TAI, known as "Tai Chi Bao" (Raisin Bread). TAI, a single father with an 8-year-old son, dreams of becoming the coffee king of Hong Kong. As TAI learned the art of latte-making from WOR, their feelings for each other blossomed, despite facing numerous obstacles. The biggest challenge they faced was overcoming the disapproval of WOR's two mothers, her biological mother MA SZE NGA and stepmother SO MEI, who were against their relationship. With so many hurdles to overcome, how will TAI and WOR navigate their love story and brew a strong and fragrant cup of coffee together?

Recommendation: Qing Guo Xiang similar to Knock on the Happiness Door
45%Match
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Qing Guo Xiang(青果巷)

2014China
Age GapAge GapLifeOlder Man-Younger WomanRomanceDivorced Male LeadDramaEvil ExHistorical PreservationNeighborhood Setting

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, Life, Older Man-Younger Woman, and Romance themes with a 45% similarity match.

The tale of safeguarding Qingguo Lane amidst the urban development surge is a pressing concern for the inhabitants of the historic city of Yanling. Individuals with foresight, such as the artist Wang Geng who returned from abroad, and the historian Qing Guo, have been diligently working towards this cause. Unfortunately, Wang Geng's former spouse Wen Di and the real estate tycoon Xie Bo Zhao, among others, have made concerted efforts to undermine and impede their efforts due to their own selfish motives. A romantic bond between the mature and magnanimous Wang Geng and the youthful and compassionate Qing Guo blossomed unexpectedly, but they were unaware of the myriad challenges and obstacles awaiting them. In the midst of striving to preserve Qingguo Lane, a saga of grudges and enmities unfolded between various parties, including Wang Geng and Qing Guo, Wang Geng and Wen Di, Xie Miao Ying and Zhuang Shao Yan, and the older generation represented by Tang Si Mian and Yang Zi Yun. Some relationships were vibrant, some were unforgettable, some lingered, and some were tinged with sorrow and resentment. Within the ancient and tranquil Qingguo Lane, a tapestry of human drama and comedy was woven.

Recommendation: Last Christmas similar to Knock on the Happiness Door
45%Match
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Last Christmas(ラストクリスマス)

2004Japan
Age GapAge GapLifeOlder Man-Younger WomanRomanceDramaIllnessNeighbors' RelationshipNice Male LeadWinter Setting

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, Life, Older Man-Younger Woman, and Romance themes with a 45% similarity match.

Haruki Kenji, a 36-year-old Winter Sports section manager at a major sporting goods company, embarks on a ski trip to New Zealand with his friend and boss, Shintani Goro, along with Shintani's new secretary, 24-year-old Aoi Yuki. Upon returning to Japan, Haruki discovers that Aoi is his new neighbor in the apartment next door. While observing the movers, he notices a photograph falling from Aoi's luggage. As he examines the photo, he realizes it is of a female bicycle gang, with Aoi featured in the picture. Haruki learns that Aoi presents a different persona at work compared to her true self at home, where she is manipulative and dates multiple men for personal gain. Their dynamic changes when Aoi returns home intoxicated one night without her keys, and Haruki assists her by letting her into her apartment through the connecting door. During this incident, Aoi accidentally drops a video tape into Haruki's apartment. Curious, Haruki watches the tape, which contains a heartfelt message from Aoi to herself. This revelation prompts Haruki to see Aoi in a new and unexpected light.

Recommendation: Daring Women similar to Knock on the Happiness Door
44%Match
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Daring Women(당돌한 여자)

2010South Korea
Age GapAge GapOlder Man-Younger WomanRomanceDeathDeath Of A HusbandDrama

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, Older Man-Younger Woman, and Romance themes with a 44% similarity match.

Ji Soon Young experiences the heartbreaking loss of her husband, Wang Se Joon, due to a tragic accident. Left to care for their adopted daughter on her own, she encounters Han Kyu Jin and falls in love with him. Unbeknownst to her, Kyu Jin is the father-in-law of her former sister-in-law, Wang Se Bin. Their lives take a significant turn when Soon Young weds Kyu Jin, making her Se Bin's mother-in-law. Now, they must navigate their new family dynamics while striving to get along with one another.

Recommendation: Dad, I Am Pregnant with Your Child similar to Knock on the Happiness Door
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Dad, I Am Pregnant with Your Child(爸爸,我怀了你的孩子)

2010China
Age GapAge GapOlder Man-Younger WomanRomanceDeathFamilyPregnancy

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, Older Man-Younger Woman, and Romance themes with a 44% similarity match.

The 19-year-old girl, Si Chun, faced a life of solitude after losing her father. The absence of paternal affection left her yearning for the comfort of an older man. This desire led her to Guo Xiao, a worker who was over a decade her senior. Despite the age gap, Si Chun was captivated by Guo Xiao's maturity and stability. For Guo Xiao, being with Si Chun brought back feelings of youth and vigor. Their love blossomed, but the harsh reality of their significant age difference strained their relationship over time. The couple eventually decided to part ways due to their growing disagreements. However, unbeknownst to Guo Xiao, Si Chun was already pregnant with his child. Determined to raise the baby alone, she chose to keep her pregnancy a secret and raise the child independently.

Recommendation: Ai no Uta similar to Knock on the Happiness Door
44%Match
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Ai no Uta(あいのうた)

2005Japan
Age GapAge GapLifeOlder Man-Younger WomanFamilyHousemates' RelationshipMiniseries

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, Life, and Older Man-Younger Woman themes with a 44% similarity match.

A story unfolds as a man and woman find themselves sharing a living space due to unforeseen events, leading them to discover the true meaning of love. Kataoka Yuji, a compassionate police officer known for helping the vulnerable and promoting peace, is a widower who has been raising three children on his own since his wife passed away four years ago. Matsuda Yoko, initially with a disagreeable demeanor, undergoes personal growth through her interactions with this kind-hearted middle-aged man.

Recommendation: Snowman similar to Knock on the Happiness Door
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Snowman(눈사람)

2003South Korea
Age GapAge GapOlder Man-Younger WomanRomanceDramaForbidden LoveUnrequited Love

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, Older Man-Younger Woman, and Romance themes with a 44% similarity match.

Initially reluctant, Seo Yun Wook and Han Pil Seung eventually develop a strong bond as sister-in-law and brother-in-law. They rely on each other for support, mischief, and companionship. Seo Yun Jung, Pil Seung's spouse, is pleased with their close relationship, but tensions arise when Wook starts to develop romantic feelings for Seung. After Wook confesses her love, their relationship becomes strained. Despite both ending up in the same police department, they make efforts to avoid each other, leading Jung to uncover the truth. Cha Sung Joon, a wealthy hotel owner's son and Wook's friend, is aware of her feelings for her brother-in-law but refuses to give up on his own affections. Wook eventually starts dating Cha in an attempt to move on from Seung, but tragedy strikes when Jung passes away. Wook's complicated feelings for her brother-in-law put her in a difficult predicament, raising questions about the nature of love within a family.

Recommendation: Song of Life similar to Knock on the Happiness Door
43%Match
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Song of Life(三悦有了新工作)

2022China
Age GapAge GapLifeWeb Series

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, and Life themes with a 43% similarity match.

Song of Life follows the story of young people who were born after 1995

Recommendation: Love Actually (2015) similar to Knock on the Happiness Door
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Love Actually (2015)(戀上黑天使)

2015China
Age GapRomanceDrama

Like Knock on the Happiness Door, this drama also features Age Gap and Romance with a 43% similarity match.

Ma Liang is a carefree individual who acts without considering the outcomes. His girlfriend of two years, Xiao Meng, has grown tired of this behavior and suggested they end their relationship. Ye Man Ling, a wealthy woman recently divorced, returns to China to take over her late father's company. During an awards event, Ye Man Ling and Ma Liang accidentally cross paths, sparking an unfortunate connection between them.

Recommendation: Li Da Bao's Ordinary Days similar to Knock on the Happiness Door
43%Match
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Li Da Bao's Ordinary Days(李大宝的平凡岁月)

2017China
Age GapRomanceFamily

Like Knock on the Happiness Door, this drama also features Age Gap and Romance with a 43% similarity match.

Upon completing middle school, Li Da Bao sought employment to provide for his family following his father's passing. He now works as a technician at a textile factory, repairing machinery. When Zhang Duo Duo, a performer in a song and dance troupe, encounters trouble at a spinning and weaving workshop, Da Bao comes to her rescue. After accompanying her to the troupe to report the incident, he unintentionally interrupts Duo Duo while she is changing clothes. In order to avoid any misunderstandings, Duo Duo decides to marry Da Bao.

Recommendation: The Silicon Waves similar to Knock on the Happiness Door
43%Match
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The Silicon Waves(赤热)

2024China
Age GapRomanceBusiness

Like Knock on the Happiness Door, this drama also features Age Gap and Romance with a 43% similarity match.

A group of skilled individuals, inspired by their country's policies, embraced the trend of returning home and innovated their own technology from the ground up. They consistently enhanced their technology to support China's goal of self-sufficiency in advanced technology. Zhang Hai Chao and Li Dong Sheng, who were classmates, united technical experts worldwide to overcome obstacles and surpass challenges in the capital market led by Huang Zhong Kai. The reunion of these individuals promises to bring about a new wave of progress.

Recommendation: Mitsu no Aji similar to Knock on the Happiness Door
42%Match
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Mitsu no Aji(蜜の味~A Taste Of Honey~)

2011Japan
Age GapAge GapDoctor Male LeadOlder Man-Younger WomanRomanceDramaForbidden LoveIncestJealousyLove TriangleMedical

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, Doctor Male Lead, Older Man-Younger Woman, and Romance themes with a 42% similarity match.

The plot will center around a romantic entanglement involving the main trio. Eikura portrays the character of Morimoto Naoko, a rural girl whose affections are directed towards her uncle, Ikezawa Masato. She decides to pursue him to Tokyo by enrolling in a prestigious medical school, only to encounter Masato's partner and co-worker Aya, a smart and attractive scientist who happens to be the daughter of the hospital's director. The situation becomes more intricate when Naoko and Masato reunite. --Tokyograph

Recommendation: Dating Agency: Cyrano similar to Knock on the Happiness Door
40%Match
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Dating Agency: Cyrano(연애조작단: 시라노 )

2013South Korea
Age GapOlder Man-Younger WomanRomanceComedyDramaLove TriangleMatchmaking

Like Knock on the Happiness Door, this drama also features Age Gap, Older Man-Younger Woman, and Romance themes with a 40% similarity match.

Min Yeong is employed as a dating agent, and although her profession demands that she pairs clients according to their social statuses, she holds the belief that love should be free of limitations

Recommendation: Women Walk the Line similar to Knock on the Happiness Door
40%Match
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Women Walk the Line(我们的当打之年)

2022China
Age GapLifeRomanceDivorced Female LeadDramaFemale Centered PlotMultiple Mains

Like Knock on the Happiness Door, this drama also features Age Gap, Life, and Romance themes with a 40% similarity match.

Two close friends from the post-90s generation have taken divergent paths in life. Following graduation, one friend remained in Shanghai to focus on her career, while the other returned to their hometown to get married. Over time, they both face unprecedented challenges. Yuan Ge has prioritized her career over relationships for many years, leading to a decline in her health and prompting her to make lifestyle changes. On the other hand, Gu Qiao has continuously made sacrifices for her husband, only to be served with divorce papers after eight years. Determined to restart her career, Gu Qiao is now focused on her own growth. Despite their differing personalities, both women demonstrate resilience and courage. In a bustling city full of opportunities, they navigate their struggles together, refusing to give up and embracing the journey of transformation as they enter a new phase of life in their thirties.

Recommendation: Otousan to Yobasete similar to Knock on the Happiness Door
40%Match
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Otousan to Yobasete(お義父さんと呼ばせて)

2016Japan
Age GapAge GapOlder Man-Younger WomanRomanceComedyDramaFamilyMiniseries

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, Older Man-Younger Woman, and Romance themes with a 40% similarity match.

Daidoji Tamotsu, aged 51, holds the position of department manager at a medium-sized specialized trading firm. He encounters a woman who is 28 years younger than him and they decide to tie the knot. Meanwhile, Hanazawa Kiichiro is a high-ranking office worker at a leading general trading company. He is taken aback when his daughter introduces a man who is the same age as him as her partner. This leads to a series of challenges in what he had previously thought was the perfect family, prompting him to reevaluate his life choices.

Recommendation: A Thousand Kisses similar to Knock on the Happiness Door
40%Match
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A Thousand Kisses(천번의 입맞춤)

2011South Korea
Age GapAge GapOlder Man-Younger WomanRomanceDramaFamilyMultiple CouplesOlder Woman-Younger Man

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, Older Man-Younger Woman, and Romance themes with a 40% similarity match.

A dramatic portrayal that examines the dynamics of age disparities in romantic relationships. Woo Joo Young and Jang Woo Bin navigate the complexities of a relationship involving an older woman and a younger man, while Jang Woo Jin and Joo Young's younger sister, Joo Mi, confront the significant age difference that exists between them.

Recommendation: Bad Family similar to Knock on the Happiness Door
40%Match
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Bad Family(불량가족)

2006South Korea
Age GapOlder Man-Younger WomanRomanceAmnesiaBickering Mains' RelationshipComedyFamily

Like Knock on the Happiness Door, this drama also features Age Gap, Older Man-Younger Woman, and Romance themes with a 40% similarity match.

Na Rim, who grew up in an affluent family, tragically lost her loved ones in a car crash at the age of nine. Following the incident, she experienced memory loss, prompting her uncle to enlist the help of Oh Dal Gun, a former gangster, to create a makeshift family environment that included parents, a sister, a brother, grandparents, and an uncle, in hopes of helping her recover her memories. In his haste, Oh Dal Gun ended up recruiting a variety of quirky individuals to portray Na Rim's family members. Initially, the group struggled to get along, leading to comical situations as they attempted to navigate their new roles in front of the young girl while also shielding her from the person responsible for her family's tragedy. Over time, however, they began to act like a true family and developed genuine care for one another, demonstrating that a nurturing heart can be more important than biological ties. This series is the second installment in SBS's "Bad" trilogy.

Recommendation: You Are the Best! similar to Knock on the Happiness Door
40%Match
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You Are the Best!(최고다 이순신)

2013South Korea
Age GapAge GapOlder Man-Younger WomanRomanceComedyDramaFamilySoap Opera

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, Older Man-Younger Woman, and Romance themes with a 40% similarity match.

After the passing of her father, Lee Soon Shin faces numerous challenges. Both she and her mother find it difficult to attain happiness. Amid the highs and lows of her life, her romantic journey unfolds. As the youngest in a prosperous family, Lee Soon Shin appears to lack the talents that her relatives possess, often being viewed as an outsider, even though she is a spirited, vibrant, and brave young woman. Her life takes a transformative turn when she encounters Shin Joon Ho, the head of a talent agency. Initially, Shin Joon Ho is a self-assured, aloof, and competitive individual, but he undergoes a change as he learns the true essence of success through his relationship with Lee Soon Shin.

Recommendation: Don't Think Twice, Love's All Right similar to Knock on the Happiness Door
40%Match
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Don't Think Twice, Love's All Right(爱我就别想太多)

2020China
Age GapAge GapOlder Man-Younger WomanRomanceDramaHidden IdentityRich Male LeadSmart Female Lead

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, Older Man-Younger Woman, and Romance themes with a 40% similarity match.

Li Hong Hai, an unassuming man in his forties with a fortune in the billions, is searching for genuine love. Despite his wealth attracting many women, he desires a connection beyond money. When he meets Xia Ke Ke, a spirited young designer, he is drawn to her and decides to hide his affluent status, pursuing her as a humble entrepreneur instead. Their journey together leads to marriage, but Li discovers that Xia was aware of his riches all along. Feeling deceived, he considers divorce, but is compelled to maintain their facade as a couple for three months to facilitate his company's public offering.

Recommendation: Love Song similar to Knock on the Happiness Door
40%Match
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Love Song(ラヴソング)

2016Japan
Age GapAge GapOlder Man-Younger WomanRomanceComing Of AgeDramaMiniseriesMusic

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, Older Man-Younger Woman, and Romance themes with a 40% similarity match.

Kohei Kamishiro, portrayed by Masaharu Fukuyama, was once a musician who had a single successful song before his record deal was terminated. This setback led him to abandon his music career and live a mundane life for the next two decades. Despite distancing himself from music, his love for it remains strong. His past experiences have made it challenging for him to form relationships with women. However, his life takes a turn when he encounters a woman with a troubled past who lives a solitary existence. Despite her complexities, she possesses an extraordinary singing voice. This encounter reignites Kohei's passion for music and inspires him to create music once again.

Recommendation: Shiroi Kage (2001) similar to Knock on the Happiness Door
40%Match
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Shiroi Kage (2001)(白い影)

2001Japan
Age GapOlder Man-Younger WomanRomanceCold Man-Warm WomanDramaMedicalMiniseries

Like Knock on the Happiness Door, this drama also features Age Gap, Older Man-Younger Woman, and Romance themes with a 40% similarity match.

Nobuko Shimura is working her first shift at Gyoda Hospital, with Yosuke Naoe as the attending physician. Later in the evening, Nobuko's childhood friend Jiro Toda is admitted with a forehead injury sustained in a fight. Unfortunately, Naoe is unavailable as he has stepped out for a drink. Toda and the ambulance crew express frustration and demand to know the doctor's whereabouts. Upon Naoe's return, he handles the situation by instructing for Toda to be secluded in a restroom until he calms down. Nobuko is taken aback by Naoe's behavior initially, but becomes impressed by his surgical skills during the treatment of Toda's wound. This encounter marks the beginning of their significant relationship.

Recommendation: Sensei Sayonara similar to Knock on the Happiness Door
40%Match
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Sensei Sayonara(先生さようなら)

2024Japan
Age GapOlder Man-Younger WomanRomanceAdapted From A MangaMiniseriesStudent-Teacher RelationshipTeacher Male Lead

Like Knock on the Happiness Door, this drama also features Age Gap, Older Man-Younger Woman, and Romance themes with a 40% similarity match.

In the story, there is a romantic tale unfolding both in the present and the past. Tamura Takuro, a 27-year-old art teacher at a high school, is well-liked by his students. Yayoi, a student in his class, lacks direction in her life. Tamura Takuro suggests she join the art club, and as Yayoi looks through his sketchbook, she discovers numerous drawings of a woman named Yumiko, who was Tamura Takuro's teacher when he was a high school student. Tamura Takuro harbored feelings for Yumiko, his former Japanese language and homeroom teacher.

Recommendation: Living no Matsunaga-san similar to Knock on the Happiness Door
38%Match
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Living no Matsunaga-san(リビングの松永さん)

2024Japan
Age GapLifeOlder Man-Younger WomanRomanceAdapted From A MangaCohabitationComedyFreelancer Male LeadPart-time Worker Supporting CharacterShare House SettingTeenager Female Lead

Like Knock on the Happiness Door, this drama also features Age Gap, Life, Older Man-Younger Woman, and Romance themes with a 38% similarity match.

Matsunaga Jun, a 29-year-old individual who works as a freelance graphic designer in Tokyo, resides in a shared living space with occupants from diverse age ranges. Despite appearing spirited, Jun is actually warm and caring. The household welcomes a new member, Sonoda Miko, a high school sophomore known for her vibrant personality and proactive nature. Miko's family relocated to the countryside to manage her grandparents' inn, but she chose to stay behind to remain with her school friends. She joins Jun in the shared living space, where the residents navigate conflicts and offer support to one another, fostering personal growth and forming bonds.

Recommendation: Healing Food, Healing Love similar to Knock on the Happiness Door
38%Match
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Healing Food, Healing Love(你是我的美味)

2022China
Age GapAge GapLifeOlder Man-Younger WomanRomanceFoodHealingSecondary CoupleWeb SeriesWorkplace RomanceWorkplace SettingWriter Female Lead

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, Life, Older Man-Younger Woman, and Romance themes with a 38% similarity match.

The main focus is on the romantic relationship between Shen Ying and Zheng Dao, who have contrasting personalities and professions. Despite their differences, they both share a passion for sharing healthy cuisine with the world. Shen Ying is a dedicated and independent food editor who is known for her kindness and beauty. On the other hand, Zheng Dao is the meticulous director of the Gourmet Edition of the magazine, with a cold and strict demeanor, especially when it comes to food standards.

Recommendation: Triumph in the Skies similar to Knock on the Happiness Door
38%Match
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Triumph in the Skies(衝上雲宵)

2003Hong Kong
Age GapAge GapLifeOlder Man-Younger WomanRomanceAerospace IndustryAirport SettingAviation IndustryDramaFriendshipMultiple MainsSecondary Couple

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, Life, Older Man-Younger Woman, and Romance themes with a 38% similarity match.

Samuel and Vincent share a close friendship as they strive to achieve their goal of becoming the first Chinese captain. While Vincent is known by the nickname "Playboy," Samuel is focused on finding genuine love. Their lives intersect with Isabelle, a stewardess whom they both develop feelings for. The show follows the lives and relationships of employees at Solar Airways, a fictional airline inspired by Cathay Pacific, as well as the Hong Kong International Airport. (TVBAnywhere)

Recommendation: My Stupid Cupid similar to Knock on the Happiness Door
38%Match
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My Stupid Cupid(แผนรักหักคานลุง)

2025Thailand
Age GapAge GapRomanceFamilyMultiple Couples

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, and Romance themes with a 38% similarity match.

Confirmed bachelors and irresistibly charming, brothers Mee and Muek cherish their single lives. The elder sibling, Mee, has been deeply wounded by a past romance, while Muek prefers the freedom that comes with being unattached. They are not swayed by any woman—no ties, no obligations, and no romantic entanglements. However, everything changes when fate steps in and the brothers cross paths with two spirited young women, Namphueng and Pladao. Namphueng finds herself drawn to Mee, while Pladao sets her sights on winning over Muek. Can these determined ladies penetrate the hearts of the love-averse brothers and free them from their bachelor existence?

Recommendation: Blind Date (2017) similar to Knock on the Happiness Door
38%Match
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Blind Date (2017)(盲约)

2017China
Age GapRomanceDramaFamily

Like Knock on the Happiness Door, this drama also features Age Gap and Romance with a 38% similarity match.

Xia Tian, a young woman who is currently single, discovers that her mother is willing to pay for her sister's wedding if she attends with a boyfriend. Determined to prove her mother wrong and ensure her sister's dream wedding, Xia Tian sets out to find a boyfriend within 258 days. This storyline is a remake of the Argentinian TV series "Blind to Dating" (Ciega a Citas) [2019]. (Viki)

Recommendation: Fall in Love Again (2022) similar to Knock on the Happiness Door
38%Match
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Fall in Love Again (2022)(爱恋告急)

2022China
Age GapRomanceShort Length SeriesWeb Series

Like Knock on the Happiness Door, this drama also features Age Gap and Romance with a 38% similarity match.

Lawyer Mu Qian and mediator Ou Yang have made the difficult decision to end their marriage due to a lack of trust and understanding

Recommendation: Limited 72 Hours of Love similar to Knock on the Happiness Door
38%Match
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Limited 72 Hours of Love(我的盲盒恋人)

2024China
Age GapRomanceFantasyWeb Series

Like Knock on the Happiness Door, this drama also features Age Gap and Romance with a 38% similarity match.

Su Nuan Nuan, a 25-year-old designer of mystery boxes, experiences a difficult birthday marked by long hours at work, miscommunications, and a romantic split. Hoping for an ideal partner, she purchases a regular-looking mystery box from a local shop in her moment of despair. This purchase sets her on an extraordinary adventure with a mystery box companion. Can she find the true love she longs for? (WeTv)

Recommendation: To Grow with Love similar to Knock on the Happiness Door
38%Match
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To Grow with Love(肥田囍事)

2006Hong Kong
Age GapRomanceComedyDrama

Like Knock on the Happiness Door, this drama also features Age Gap and Romance with a 38% similarity match.

Fat Tin, a wealthy man's daughter in the Philippines, is concerned about her future due to her weight. Her father tries to arrange a marriage for her with Mak Ka Fai, but Fat Tin is uninterested and flees to Hong Kong. In Hong Kong, she faces criticism for her weight from Tai Hei, a successful designer. Despite their differences, they eventually grow closer due to unexpected events in the Philippines.

Recommendation: In Bed with a Stranger similar to Knock on the Happiness Door
38%Match
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In Bed with a Stranger(再見,枕邊人)

2024Hong Kong
Age GapRomanceInvestigationMystery

Like Knock on the Happiness Door, this drama also features Age Gap and Romance with a 38% similarity match.

In Hong Kong, relatives of a missing individual can request for the individual to be legally declared deceased after a period of seven years. Yeung Man Sum, a production company owner, chooses to move on from his wife Koo Ching Tin, who has been missing for seven years, and tie the knot with his caring girlfriend Chu Sin Mei. However, unexpectedly, Chi Hin's biological mother Ching Tin reappears.

Recommendation: Tonikaku Konin Todoke ni Han wo Oshitai dake desu ga similar to Knock on the Happiness Door
38%Match
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Tonikaku Konin Todoke ni Han wo Oshitai dake desu ga(とにかく婚姻届に判を捺したいだけですが)

2021Japan
Age GapRomanceMiniseriesShort Length Series

Like Knock on the Happiness Door, this drama also features Age Gap and Romance with a 38% similarity match.

Marriage may not be the most important thing, but Mamiya is afraid of being alone. She faces challenges in finding a partner due to her high standards. However, her encounter with the attractive veterinary nurse, Makihara Yuito, might just lead her to true love. (Paravi.jp)

Recommendation: Musashi no Rondo similar to Knock on the Happiness Door
38%Match
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Musashi no Rondo(ムサシノ輪舞曲)

2025Japan
Age GapAge GapRomanceAdapted From A MangaOlder Woman-Younger Man

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, and Romance themes with a 38% similarity match.

Since childhood, he has harbored feelings for the girl next door, who is a decade his senior. However, despite the years that have passed, he remains trapped in the role of "the younger brother who feels like family." Just when he was ready to relinquish hope, a romantic rival emerges, reigniting his determination. He resolves to pursue her more assertively! After a decade of unreciprocated affection, things finally begin to change!

Recommendation: Tengoku no Koi similar to Knock on the Happiness Door
38%Match
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Tengoku no Koi(天国の恋)

2013Japan
Age GapAge GapRomanceDramaOlder Woman-Younger Man

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, and Romance themes with a 38% similarity match.

In "Love of the Heavens," the story revolves around a romance between a woman in her forties and men in their twenties. Itsuki Hanyu, a 41-year-old housewife, runs a used bookstore and is stuck in a troubled marriage, with her 14-year-old daughter being the only reason it hasn't fallen apart. One day, Itsuki's dormant desires are awakened when she catches Shida Motoharu trying to steal an erotic novel from her shop. Fueled by her newfound desires, Itsuki embarks on a love affair with the young man. Later on, she encounters Kunimoto Satoshi/Komato Shio, who bears a striking resemblance to a past love and brings back dark secrets from the past.

Recommendation: Shuffle of Hearts similar to Knock on the Happiness Door
38%Match
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Shuffle of Hearts(พรหมพยศ)

2025Thailand
Age GapRomanceNovel AdaptationHistorical

Like Knock on the Happiness Door, this drama also features Age Gap and Romance with a 38% similarity match.

Everyone has faith in fate, including Paengram, a woman who has been enchanted by the kind-hearted and attractive Kan since their initial encounter. However, destiny takes a harsh turn when she finds herself becoming his future sister-in-law. The situation becomes increasingly complex as the kindness that endeared Kan to Paengram fails to meet the expectations of his girlfriend Nam-ob, leading to the involvement of numerous other parties.

Recommendation: My Dearest similar to Knock on the Happiness Door
36%Match
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My Dearest(是亲密的你)

2023China
Age GapDoctor Male LeadRomanceDentist Male LeadDramaHousemates' RelationshipIllustrator Female LeadWeb Series

Like Knock on the Happiness Door, this drama also features Age Gap, Doctor Male Lead, and Romance themes with a 36% similarity match.

The aspiring artist Xiang Yan, fresh out of college and dreaming of a blissful marriage, crossed paths with Lin Heng Yu, a prosperous dentist who believed in staying single. They ended up becoming roommates by chance. (Youku YouTube)

Recommendation: I'm Pregnant With Your Baby similar to Knock on the Happiness Door
36%Match
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I'm Pregnant With Your Baby(我怀了你的孩子)

2013China
Age GapOlder Man-Younger WomanRomanceDramaEmotionally Strong Male LeadPregnancySexual ContentSocial Issues

Like Knock on the Happiness Door, this drama also features Age Gap, Older Man-Younger Woman, and Romance themes with a 36% similarity match.

Is it possible for a relationship with a significant age gap to succeed? A man develops romantic feelings for a woman who is two decades younger than him. Despite a promising start, the couple eventually decides to part ways. However, could destiny intervene and reunite them? "I Have Your Child" is a Chinese Web series that premiered in 2013. --Viki

Recommendation: Land of Dreams similar to Knock on the Happiness Door
36%Match
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Land of Dreams(一梦浮生)

2024China
Age GapAge GapOlder Man-Younger WomanRomanceChinese Republican EraHistoricalHistorical FictionShort Length SeriesWeb Series

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, Older Man-Younger Woman, and Romance themes with a 36% similarity match.

During the transition from the Qing Dynasty to the Republic of China, the Lin family, once wealthy, faced sudden destruction. The lone surviving daughter, Lin Meng Chen, was forced into a ghost marriage with the wealthy Huang family's deceased son. Just as Meng Chen was on the brink of being buried alive, Xiao Sheng, the top assassin of the Blood Sacrifice Hall on a mission to eliminate the Huang family, inadvertently saved her. Despite witnessing Xiao Sheng's lethal skills, Meng Chen not only showed no fear but also considered him her savior. From that moment on, Xiao Sheng vowed to protect Meng Chen and they became like siblings. Over the years, Xiao Sheng maintained a dual identity to safeguard Meng Chen's innocence. To her, he was Mr. Ye, a businessman, while secretly he continued his role as the top assassin. Unbeknownst to Xiao Sheng, Meng Chen discovered his true identity and joined the Blood Sacrifice Hall as his disciple under the name Gu Yu. (Youku)

Recommendation: Uragiri no Machi similar to Knock on the Happiness Door
36%Match
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Uragiri no Machi(裏切りの街)

2016Japan
Age GapAge GapLifeRomanceDramaFamilyInfidelityMiniseriesOlder Woman-Younger Man

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, Life, and Romance themes with a 36% similarity match.

Hashimoto Tomoko, aged 42, leads a mundane life as a typical homemaker. One fateful day, she crosses paths with Sugawara Yuichi, a part-time worker 15 years her junior. Yuichi is in a relationship with Suzuki Satomi, who lives with him, while Tomoko is married to Koji. Despite being fully aware of their respective partners, Tomoko and Yuichi engage in frequent encounters in a narrow street near the Chuo train line without any clear intentions, ultimately leading to a physical relationship. These rendezvous serve as a temporary escape from the relentless monotony of their lives, filling the emotional void within them. However, an unforeseen event begins to shake Tomoko and Yuichi, unraveling an incredibly harsh reality that lies ahead for them.

Recommendation: Kahogona Wakadanna-sama no Amayakashi Kon similar to Knock on the Happiness Door
36%Match
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Kahogona Wakadanna-sama no Amayakashi Kon(過保護な若旦那様の甘やかし婚)

2024Japan
Age GapLifeOlder Man-Younger WomanRomanceApprentice Female LeadCo-workers' RelationshipInn Owner Male LeadInn SettingLoyal Male LeadProtective Female LeadSenior-Junior RelationshipSexual Tension

Like Knock on the Happiness Door, this drama also features Age Gap, Life, Older Man-Younger Woman, and Romance themes with a 36% similarity match.

The narrative revolves around Someya Yukito, the heir to a historic inn in Asakusa, and Tsuruoka Io, a diligent apprentice chef who found solace in a sugary treat gifted by Yukito during a difficult period in her life. Since then, Io has held Yukito in high regard as her mentor. Their story unfolds as a tender tale of affectionate newlyweds, starting with Yukito's unexpected marriage proposal. This romantic saga is adapted from the manga series "Kahogona Wakadanna-sama no Amayakashi Kon" by Kodachi.

Recommendation: Beyond the Bar similar to Knock on the Happiness Door
36%Match
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Beyond the Bar(에스콰이어: 변호사를 꿈꾸는 변호사들)

2025South Korea
Age GapAge GapLifeOlder Man-Younger WomanRomanceDivorced Male LeadIdentical Twin Female LeadLawLaw Firm SettingLawyer Female LeadLawyer Male LeadSlight RomanceSmart Female Lead

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, Life, Older Man-Younger Woman, and Romance themes with a 36% similarity match.

Yun Seok Hun serves as a partner attorney and heads the litigation team at Yullim Law Firm. He is a composed risk-taker who challenges his adversaries with inventive reasoning. His colleagues respect him for his strong legal abilities, though his aloof demeanor and absence of casual conversation make him difficult to approach. Kang Hyo Min, a novice attorney, works alongside Yun Seok Hun. While she struggles with social interactions, she possesses a sense of justice and self-assurance. Despite frequent disagreements with Yun Seok Hun, she evolves into a capable lawyer.

Recommendation: To Be a Better Man similar to Knock on the Happiness Door
36%Match
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To Be a Better Man(好先生)

2016China
Age GapAge GapLifeOlder Man-Younger WomanRomanceAttempted SuicideBlack ComedyChef Male LeadComedyFather-Daughter RelationshipMental IllnessMultiple MainsSingle Father Male Lead

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, Life, Older Man-Younger Woman, and Romance themes with a 36% similarity match.

Lu Yuan worked tirelessly in the United States to achieve the prestigious title of a Michelin 3-star chef. While many view him as a controversial figure, he displays a completely different side when it comes to his loved ones - loyal, kind, and honest. Following a tragic car accident that claims the life of his friend Da Peng, Lu Yuan decides to return to his homeland with Da Peng's ashes, reunite his daughter with her mother, and quietly bid farewell to life. However, his plans are disrupted when he unexpectedly encounters his ex-girlfriend Gan Jing, along with their former classmate Jiang Hao Kun and his younger sister Jiang Lai.

Recommendation: Nodoka no Niwa similar to Knock on the Happiness Door
36%Match
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Nodoka no Niwa(長閑の庭)

2019Japan
Age GapAge GapLifeOlder Man-Younger WomanRomanceAdapted From A MangaMelodramaMiniseriesMoral DilemmaSchool SettingShy Female LeadSmart Male LeadStudent-Teacher Relationship

Like Knock on the Happiness Door, this drama also features Age Gap, Age Gap, Life, Older Man-Younger Woman, and Romance themes with a 36% similarity match.

This story follows the relationship between Asahina Motoko, a 23-year-old graduate student, and her professor, Sakaki Ikuo, who is 64 years old. Motoko is known for her serious demeanor and lack of social skills, earning her the reputation of being dark and gloomy among her peers. Despite this, she finds Professor Sakaki to be kind and approachable, even though he is perceived as strict and intimidating. While Professor Sakaki insists that Motoko's feelings are not love, there is a growing connection between them that has the potential to positively impact both of their lives.

Recommendation: Jin Qian Ben Shai similar to Knock on the Happiness Door
33%Match
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Jin Qian Ben Shai(金钱本色)

2000Hong Kong
LifeRomance

Like Knock on the Happiness Door, this drama also features Life and Romance with a 33% similarity match.

Recommendation: Strangers on the Same Road similar to Knock on the Happiness Door
33%Match
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Strangers on the Same Road(新人在旅途)

2018China
LifeRomance

Like Knock on the Happiness Door, this drama also features Life and Romance with a 33% similarity match.

Recommendation: Wonderful Life (2018) similar to Knock on the Happiness Door
33%Match
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Wonderful Life (2018)(美好生活)

2018China
LifeRomance

Like Knock on the Happiness Door, this drama also features Life and Romance with a 33% similarity match.

The plot of Wonderful Life follows Xu Tian (portrayed by Zhang Jia Yi), as he faces challenges in both his personal and professional life. After enduring setbacks, he decides to leave the United States, where he has resided for a decade, and return to his homeland. However, upon his arrival at the airport, an old illness resurfaces, necessitating a heart transplant to save his life. Following the surgery, he resides at his mother Dao Mei Lan's (played by Song Dan Dan) matchmaking agency, where he crosses paths with his former blind date Liang Xiao Hui (played by Li Xiao Ran). Initially exchanging banter, they eventually develop a friendship. Xiao Hui is taken aback, as Xu Tian bears a striking resemblance to her late husband. Seeking guidance, she turns to Psychologist Bian Zhi Jun (portrayed by Xin Bai Qing).

Recommendation: Sweet Encounter similar to Knock on the Happiness Door
33%Match
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Sweet Encounter(最美的相遇)

2019Taiwan
LifeRomance

Like Knock on the Happiness Door, this drama also features Life and Romance with a 33% similarity match.

Recommendation: A Taste of First Love similar to Knock on the Happiness Door
33%Match
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A Taste of First Love(拜托了! 姐姐)

2022China
Age GapRomanceOlder Woman-Younger ManShort Length SeriesWeb Series

Like Knock on the Happiness Door, this drama also features Age Gap and Romance with a 33% similarity match.

"A Glimpse of Young Love" narrates the tale of Sun Wei Yi, who faced financial ruin and shared a complicated bond with mechanic Bai Ze Liu

Recommendation: Turn on the Right Way to Life similar to Knock on the Happiness Door
33%Match
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Turn on the Right Way to Life(打开生活的正确方式)

2023China
LifeRomance

Like Knock on the Happiness Door, this drama also features Life and Romance with a 33% similarity match.

At 42 years old, Bian Liang finds himself in a state of uncertainty as he enters his forties, a time that is typically associated with stability and success. Despite being a proactive father seeking new opportunities, he is faced with challenges in his reserved and unresponsive son, as well as a career standstill. Previously believing that his family life was running smoothly, Bian Liang is now surprised to find them in crisis. His decades of wisdom and experience no longer seem sufficient to tackle the various obstacles he is encountering, leading him to question his previous methods. Despite feeling lost and powerless, Bian Liang, as a responsible middle-aged man, is determined to push forward and search for solutions. As he navigates through shattered past experiences, he learns to mend relationships with his wife, son, relatives, and friends, ultimately discovering a new path to follow.