Can’t Get Enough of Seo In Guk? Here Are 10 Must-Watch K-Dramas

Seo In Guk has become one of South Korea’s most beloved actors thanks to his incredible versatility, natural charisma, and emotional performances. Whether he’s playing a mysterious anti-hero, a hopeless romantic, a genius profiler, or a charming con artist, Seo In Guk has a unique ability to make every character unforgettable.

After winning the first season of Superstar K in 2009, Seo In Guk successfully transitioned from singer to actor and quickly proved he was much more than a talented vocalist. Today, he is known for starring in some of the most memorable K-dramas across romance, thriller, fantasy, and comedy genres.

If you’ve already watched his most famous series and are looking for more, here are 10 must-watch K-dramas featuring Seo In Guk that perfectly showcase why fans around the world adore him.

1. Doom at Your Service (2021)

Genre: Fantasy, Romance, Melodrama

If there’s one drama that perfectly showcases Seo In Guk’s acting range, it’s Doom at Your Service. He stars as Myul Mang, a supernatural being who exists to bring destruction wherever he goes. Neither fully human nor completely divine, Myul Mang has lived for centuries carrying out his duty without emotion or purpose. His lonely existence changes forever when he meets Tak Dong Kyung (Park Bo Young), a hardworking web novel editor who is suddenly diagnosed with a terminal illness.

In a moment of despair, Dong Kyung wishes for the entire world to disappear, unintentionally summoning Myul Mang. He offers her an unusual contract: she can live out her remaining days however she wishes, but in exchange she must eventually choose someone or something she loves to be destroyed. As they spend more time together, what begins as a cold agreement gradually transforms into a heartfelt romance that challenges destiny itself.

Seo In Guk delivers one of the most emotionally layered performances of his career. He effortlessly portrays Myul Mang’s cold indifference, hidden loneliness, sarcastic humor, and growing vulnerability. His chemistry with Park Bo Young is widely praised as one of the strongest in recent fantasy romances.

Beyond the love story, the drama explores themes of fate, mortality, sacrifice, hope, and the value of life. Beautiful cinematography, poetic dialogue, and a memorable soundtrack make every episode feel cinematic.

Why You Should Watch

• One of Seo In Guk’s career-best performances
• Incredible chemistry with Park Bo Young
• Emotional fantasy romance
• Stunning visuals and OST
• A touching story about love, destiny, and second chances

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2. Café Minamdang (2022)

Genre: Mystery, Comedy, Crime

In Café Minamdang, Seo In Guk proves he can be just as entertaining in comedy as he is in romance and thrillers. He plays Nam Han Joon, a former criminal profiler who reinvented himself as a famous fortune teller after leaving the police force. Although he appears to be a spiritual guru with supernatural abilities, Han Joon actually relies on psychology, observation, technology, and investigative skills to solve his clients’ problems.

Operating out of the mysterious Café Minamdang, Han Joon and his quirky team scam wealthy clients while secretly exposing criminals. His unusual methods eventually bring him into conflict with passionate detective Han Jae Hee (Oh Yeon Seo), who is determined to uncover the truth behind his fake psychic business.

The drama perfectly blends comedy, mystery, crime-solving, and romance. Seo In Guk steals every scene with his exaggerated expressions, hilarious disguises, dramatic fortune-telling performances, and surprisingly brilliant detective work. Despite the comedic tone, the series also tackles serious murder investigations connected to a larger conspiracy.

The supporting cast adds plenty of humor, making every episode enjoyable even during intense mystery arcs.

Why You Should Watch

• Seo In Guk’s funniest role
• Unique blend of mystery and comedy
• Memorable supporting characters
• Plenty of suspense and plot twists
• Great chemistry between the leads

3. The Smile Has Left Your Eyes (2018)

Genre: Melodrama, Romance, Mystery

Often considered Seo In Guk’s finest dramatic performance, The Smile Has Left Your Eyes is a heartbreaking remake of the acclaimed Japanese drama Sora Kara Furu Ichioku no Hoshi. He plays Kim Moo Young, an enigmatic brewery employee whose mysterious past and unpredictable personality make him both fascinating and dangerous.

Moo Young becomes romantically involved with advertising designer Yoo Jin Kang (Jung So Min), while her older brother, detective Yoo Jin Gook (Park Sung Woong), becomes convinced that Moo Young is connected to a murder case. As hidden secrets begin to emerge, their lives become increasingly intertwined, leading to devastating consequences.

Seo In Guk masterfully portrays a man who appears cold and detached on the surface but longs for genuine love and acceptance. His emotional transformation throughout the series is subtle yet incredibly powerful, making viewers empathize with a deeply flawed character.

The drama isn’t a typical romance—it explores trauma, guilt, family, redemption, and destiny with remarkable depth. Its emotionally charged ending remains one of the most unforgettable conclusions in modern K-drama.

Why You Should Watch

• Seo In Guk’s most emotionally complex role
• Outstanding chemistry with Jung So Min
• Gripping psychological mystery
• Beautiful cinematography
• An unforgettable and heartbreaking ending

4. Shopping King Louie (2016)

Genre: Romantic Comedy

If you’re looking for a comforting and heartwarming romantic comedy, Shopping King Louie is the perfect choice. Seo In Guk plays Louie, a wealthy chaebol heir who has spent his entire life spoiled by luxury. After a tragic accident leaves him with amnesia, he suddenly loses everything and finds himself wandering the streets of Seoul with no memory of who he is.

Louie is eventually taken in by Go Bok Sil (Nam Ji Hyun), a kind and hardworking young woman from the countryside searching for her missing brother. Despite their completely different backgrounds, the two slowly develop a sweet and innocent romance as they learn to rely on one another.

Seo In Guk is absolutely adorable in this role. His childlike innocence, hilarious reactions to everyday situations, and genuine kindness make Louie one of the most lovable male leads in K-drama history.

Unlike many romantic comedies filled with unnecessary misunderstandings, this drama focuses on healing, personal growth, friendship, and unconditional love.

Why You Should Watch

• One of the cutest K-drama couples
• Seo In Guk’s most lovable character
• Lighthearted comedy
• Feel-good romance
• Perfect comfort-watch drama

5. Reply 1997 (2012)

Genre: Youth, Romance, Slice of Life

Reply 1997 marked Seo In Guk’s breakthrough as an actor and remains one of Korean television’s most beloved coming-of-age dramas. Set during the late 1990s, the series follows a group of high school friends navigating adolescence, first love, family expectations, and the rise of K-pop fandom culture.

Seo In Guk plays Yoon Yoon Jae, a quiet and intelligent student who has secretly loved his childhood best friend, Sung Shi Won (Jung Eun Ji), for years. While Shi Won is completely obsessed with her favorite boy band, Yoon Jae struggles to express his feelings, leading to years of misunderstandings and emotional tension.

The drama skillfully blends romance with nostalgic humor, highlighting everything from cassette tapes and pagers to the excitement of first-generation K-pop fandom. Seo In Guk’s natural performance makes Yoon Jae’s journey from awkward teenager to mature adult feel authentic and relatable.

Even years after its release, Reply 1997 remains a defining drama of the slice-of-life genre.

Why You Should Watch

• The drama that launched Seo In Guk’s acting career
• Nostalgic coming-of-age story
• Heartwarming friendships
• Realistic romance
• Emotional family moments

6. Squad 38 (2016)

Genre: Crime, Action, Comedy

Squad 38 is one of Seo In Guk’s most underrated dramas and a hidden gem for fans of crime thrillers. Unlike traditional detective dramas, this series combines clever heists, fast-paced action, and plenty of humor while tackling the serious issue of tax evasion by the wealthy. Seo In Guk stars as Yang Jung Do, a charismatic con artist with exceptional intelligence and the ability to manipulate almost anyone he meets.

Jung Do crosses paths with Baek Sung Il (Ma Dong Seok), an honest tax collector who has become frustrated with the justice system after seeing wealthy criminals escape punishment. Together, they form an unlikely alliance known as “Squad 38,” recruiting skilled scammers, hackers, and specialists to outsmart corrupt businessmen and collect unpaid taxes through elaborate con schemes.

Seo In Guk shines in the role of Yang Jung Do. His confidence, quick wit, and effortless charm make him an irresistible anti-hero. At the same time, the actor reveals the emotional scars hidden beneath Jung Do’s playful personality, giving the character surprising depth. Watching him constantly stay one step ahead of his enemies is one of the drama’s biggest highlights.

The chemistry between Seo In Guk and Ma Dong Seok is another major reason the drama succeeds. Their mentor-student friendship evolves into one of the most entertaining partnerships in Korean television. Each mission features creative strategies, unexpected twists, and satisfying moments where corrupt elites finally face justice.

Although Squad 38 contains plenty of action and suspense, it never forgets to inject humor into the story. Every member of the con team has a unique personality, making the group dynamic both funny and engaging.

This drama is perfect for viewers who enjoy intelligent storytelling, exciting scams, and morally complex heroes who fight injustice in unconventional ways.

Why You Should Watch

• Seo In Guk’s charismatic anti-hero performance
• Exciting heist and con-artist missions
• Fantastic chemistry with Ma Dong Seok
• Clever plot twists in every episode
• A satisfying mix of action, comedy, and crime

7. Hello Monster (I Remember You) (2015)

Genre: Psychological Thriller, Crime, Mystery, Romance

If you enjoy psychological thrillers with emotionally complex characters, Hello Monster—also known internationally as I Remember You—is one of Seo In Guk’s finest works. The drama follows Lee Hyun, a brilliant criminal profiler with extraordinary intelligence who returns to Korea after years abroad to investigate a series of murders connected to his own traumatic childhood.

As Lee Hyun begins working alongside determined detective Cha Ji An (Jang Na Ra), he discovers that the new murder cases may be linked to painful secrets surrounding his missing brother and the serial killer who destroyed his family years earlier. What begins as a routine investigation soon evolves into a deeply personal search for truth, revenge, and redemption.

Seo In Guk delivers a calm, restrained, and highly intelligent performance that perfectly fits Lee Hyun’s personality. Rather than relying on exaggerated emotions, he portrays a man who has learned to suppress his feelings because of past trauma. As the story unfolds, viewers gradually witness his emotional walls crumble, revealing loneliness, guilt, and vulnerability beneath his composed exterior.

One of the drama’s greatest strengths is its psychological exploration of good and evil. Instead of presenting simple heroes and villains, the series asks difficult questions about whether people are born evil or shaped by their experiences. These themes become even more compelling through the unforgettable performances of Park Bo Gum and Choi Won Young.

The romance between Lee Hyun and Cha Ji An develops naturally without overshadowing the suspense, creating a satisfying balance between emotional moments and thrilling investigations.

Every episode introduces new clues while slowly unraveling one of the most gripping mysteries in Seo In Guk’s career.

Why You Should Watch

• Brilliant psychological storytelling
• Seo In Guk’s mature and emotionally restrained performance
• Excellent chemistry with Jang Na Ra
• Memorable supporting performances
• One of the best crime thrillers in K-drama

8. High School King of Savvy (2014)

Genre: Romantic Comedy, Workplace, Youth

High School King of Savvy proves just how naturally funny Seo In Guk can be. The drama follows Lee Min Suk, an energetic high school student and talented ice hockey player whose life suddenly changes when his older brother mysteriously disappears before starting a prestigious executive job at a large corporation.

To protect his brother’s secret, Min Suk is forced to pretend to be him despite being only a teenager. Overnight, he finds himself balancing high school classes, hockey practice, and life as a company executive. His lack of business experience leads to countless hilarious misunderstandings as he struggles to maintain his double identity.

Seo In Guk effortlessly carries the drama with his youthful energy, expressive facial expressions, and impeccable comedic timing. Watching Min Suk switch between carefree teenager and serious office worker creates endless entertaining situations.

As Min Suk grows closer to temporary employee Jung Soo Young (Lee Ha Na), their unusual relationship slowly develops into a sweet romance filled with awkward but heartfelt moments. Beyond the comedy, the drama explores themes of growing up, responsibility, confidence, and discovering one’s true potential.

Unlike many workplace dramas, High School King of Savvy focuses more on personal growth than corporate politics. The office environment becomes a place where Min Suk learns valuable life lessons while inspiring those around him with his honesty and optimism.

Although lighthearted throughout, the series also delivers emotional family moments and meaningful friendships that make the characters feel genuine.

Why You Should Watch

• One of Seo In Guk’s funniest performances
• Creative and unique storyline
• Sweet office romance
• Plenty of laugh-out-loud moments
• Heartwarming coming-of-age journey

9. Pipeline (2021)

Genre: Crime, Action, Heist (Movie)

Although Pipeline is a film rather than a television drama, it deserves a place on every Seo In Guk fan’s watchlist. The movie offers a completely different side of the actor, allowing him to showcase his action skills and charismatic screen presence in an adrenaline-filled heist story.

Seo In Guk stars as Pin Dol Yi, Korea’s most talented underground pipeline driller. His extraordinary ability to secretly tap into oil pipelines attracts the attention of wealthy businessman Gun Woo, who recruits him for an ambitious operation to steal millions of dollars worth of oil beneath the city.

Pin Dol Yi assembles a team of highly skilled specialists, each bringing unique expertise to the dangerous mission. As the operation becomes increasingly risky, greed, betrayal, and hidden agendas threaten to destroy the team’s trust.

Seo In Guk portrays Pin Dol Yi with quiet confidence and determination, making him a compelling leader who remains calm even under immense pressure. Unlike his romantic drama roles, this performance focuses on action, survival, and strategic thinking.

The movie features impressive underground tunnel sequences, exciting chase scenes, and several unexpected twists that keep viewers engaged until the final moments. While Pipeline isn’t as emotionally driven as many of Seo In Guk’s dramas, it highlights his ability to succeed in action-oriented roles.

Fans who enjoy stylish heist films similar to Ocean’s Eleven or crime thrillers will likely appreciate this entertaining adventure.

Why You Should Watch

• Exciting underground heist story
• Seo In Guk in a rare action role
• Fast-paced storytelling
• Strong ensemble cast
• Plenty of suspense and unexpected twists

10. Death’s Game (2023–2024)

Genre: Fantasy, Thriller, Action, Drama

Death’s Game is widely regarded as one of the most ambitious Korean dramas of recent years and features one of Seo In Guk’s most emotionally impactful performances. Based on the popular webtoon, the story follows Choi Yi Jae, a man who has spent years struggling with unemployment, financial hardship, and repeated failures. After reaching his breaking point, Yi Jae chooses to end his own life, believing death will finally free him from his suffering.

Instead, he awakens before the mysterious entity known as Death, who punishes him for treating life so lightly. As his punishment, Yi Jae must experience twelve different lives, dying repeatedly in completely different circumstances. If he can survive one of these lives, he may earn another chance to truly live.

Although other actors portray Yi Jae’s reincarnated identities, Seo In Guk’s powerful performance in the opening episodes establishes the emotional foundation for the entire series. He convincingly portrays despair, hopelessness, regret, and eventually a growing appreciation for the value of life.

The drama blends fantasy with action, suspense, and psychological storytelling while exploring themes of mental health, redemption, family, forgiveness, and second chances. Each reincarnation presents a unique genre—from crime thrillers and action sequences to emotional family dramas—keeping the series constantly fresh and unpredictable.

Death’s Game also boasts an exceptional ensemble cast, making every episode feel like a new story while remaining connected to Yi Jae’s overall journey.

For many fans, this series represents Seo In Guk’s most mature and emotionally resonant work to date, demonstrating once again why he remains one of Korea’s most respected actors.

Why You Should Watch

• One of the most unique fantasy concepts in K-drama
• Seo In Guk’s emotionally powerful performance
• Incredible ensemble cast
• Action-packed with meaningful life lessons
• A thought-provoking story about hope, regret, and redemption

Which Seo In Guk Drama Should You Watch First?

If you’re new to Seo In Guk’s work, here’s a quick guide:

If You Like…	Watch
Fantasy Romance	Doom at Your Service
Romantic Comedy	Shopping King Louie
Crime Thriller	Hello Monster
Mystery & Comedy	Café Minamdang
Slice of Life	Reply 1997
Dark Romance	The Smile Has Left Your Eyes
Action & Crime	Squad 38
Workplace Comedy	High School King of Savvy
Fantasy Thriller	Death’s Game
Action Movie	Pipeline

 

Conclusion

Seo In Guk has built one of the most diverse and impressive careers in Korean entertainment. From heart-fluttering romances to gripping crime thrillers and emotional fantasy dramas, his filmography offers something for every type of viewer. His ability to breathe life into every character has earned him a loyal global fanbase and critical acclaim.

Whether you’re discovering him for the first time or revisiting his best performances, these ten titles highlight exactly why Seo In Guk remains one of the most captivating actors in K-drama. If you can’t get enough of his charm, talent, and versatility, adding these series and films to your watchlist is the perfect place to start.

FAQs

1. What is Seo In Guk’s most popular K-drama?

Doom at Your Service is widely regarded as one of Seo In Guk’s most popular dramas internationally, thanks to its fantasy romance, emotional storytelling, and his chemistry with Park Bo Young.

2. Which Seo In Guk drama is the funniest?

Shopping King Louie is considered his funniest and most heartwarming romantic comedy, featuring plenty of laugh-out-loud moments and an adorable lead character.

3. Is Seo In Guk also a singer?

Yes. Seo In Guk first gained fame after winning the first season of Superstar K in 2009 and has released several albums and singles while continuing his acting career.

4. Which Seo In Guk drama is best for thriller fans?

Hello Monster (I Remember You) and Death’s Game are excellent choices for viewers who enjoy suspense, psychological twists, and crime mysteries.

5. What should I watch after Doom at Your Service?

If you loved Seo In Guk’s emotional performance in Doom at Your Service, try The Smile Has Left Your Eyes, Shopping King Louie, and Death’s Game for more unforgettable performances.