Mouse is a thriller South Korean television series starring Lee Seung-gi, Lee Hee-joon, Park Ju-hyun, and Kyung Soo-jin. In April 2020, Lee Seung-gi and Choi Jin-hyuk were offered to star in the series. The series was ranked 3rd hottest drama for the first half of 2021 based on KT's online video service (OTT) Seezn.

Mouse imagines a future in which psychopaths experience sorrow and shame for their acts. It follows Jeong Ba-reum (Lee Seung-gi), a loyal police officer whose life is turned upside down when he comes across a psychotic serial murderer. This motivates him and his collaborator, Go Moo-chi (Lee Hee-joon), to investigate the causes of psychopathic behavior. This also begs the issue of whether prenatal DNA testing can detect a psychopath in the mother's pregnancy. And will it be wise to have that child if the infant in the womb is a psychopath?

Detailed information:

Starring: Lee Seung-gi, Lee Hee-joon, Park Ju-hyun, Kyung Soo-jin

Original release: March 3 – May 20, 2021

Link to watch: imdb.com/title/tt13634792/

Vagabond is a 2019 South Korean television series starring Lee Seung-gi, Bae Suzy, and Shin Sung-rok. It aired on SBS TV from September 20 to November 23, 2019, for 16 episodes. Each episode was released on Netflix in South Korea and internationally after its television broadcast. Lee Seung-gi plays Cha Dal-gun, a stuntman whose nephew Cha Hoon was killed in the B357 aircraft disaster, which was the result of a ring of terrorists and governmental machinations seeking to cover it up. Dal-gun joins forces with Hae-ri and the NIS to investigate and, ultimately, bring them to justice.

In the aftermath of his nephew's death in a mysterious plane crash, Cha Dal Gun transforms into an awakened tiger. He had raised his nephew on his own as an orphan in lieu of his brother, who had died. He embarks on a trip to find the truth after being triggered by the large-scale cover-up of the catastrophe. Go Hae Ri is the eldest daughter of a marine who died during a surgical procedure. She had always intended to be a regular civil servant to support her family, but life had other ideas for her, and she ends up working for the National Intelligence Service (NIS). Their lives become intertwined as they uncover a labyrinth of corruption behind the plane catastrophe.

Detailed information:

Starring: Lee Seung-gi, Bae Suzy, Shin Sung-rok

Original release: September 20 – November 23, 2019

Link to watch: imdb.com/title/tt8523042/

A Korean Odyssey is a South Korean fantasy television series starring Lee Seung-gi, Cha Seung-won, Oh Yeon-seo, Lee Hong-gi, and Jang Gwang. Written by the Hong sisters, the drama is a modern spin-off of the Chinese classic 16th-century novel Journey to the West. Lee Seung-gi plays Son Oh-gong the Great Sage Equal to Heaven (based on Sun Wukong), an extraordinarily powerful immortal who was banished to the human world and had his abilities locked owing to his mischievous and arrogant personality. Jin Seon-mi is his true love. He possesses several abilities, including pyrokinesis, levitation, telekinesis, and body imprisonment.

Son Oh Gong and Ma Wang are at odds in 2017 as they seek a real light in a dark world where evil abounds. The two meet again in a fatal meeting after making a deal with Seon Mi 25 years ago, entitling her to seek aid from Son Oh Gong anytime she summons him in return for letting him go. Son Oh Gong is thus committed to his protecting position towards Seon Mi, the little girl he met years ago.

Detailed information:

Starring: Lee Seung-gi, Cha Seung-won, Oh Yeon-seo, Lee Hong-gi

Original release: December 23, 2017 – March 4, 2018

Link to watch: imdb.com/title/tt7099334/

You're All Surrounded is a 2014 South Korean television series starring Lee Seung-gi, Cha Seung-won, Go Ara, Ahn Jae-hyun, Park Jung-min, Oh Yoon-ah, and Sung Ji-ru. Eun Dae-gu is played by Lee Seung-gi. He is brusque, brilliant (IQ 150), and possesses a photographic memory. His issue with authority derives from his traumatic childhood in Masan, where his mother was slain in front of his eyes as she sought to testify as a witness to a crime. He changed his name to Eun Dae-gu and grew up in an orphanage to escape being slain himself. He later becomes a detective in order to find his mother's killer while spying on his employer Seo Pan-seok, whom he suspects colluded with his mother's killer.

Eun Dae Gu, Uh Soo Sun, Park Tae Il, and Ji Gook, also known as the P4, are new recruits in Gangnam Police Station's violent crime squad. These newbies are uninterested in their new employment and have joined the crime squad for a variety of unsuitable reasons. Seo Pan Suk, the unpredictable and hot-headed leader, wants nothing more than to wash his hands of the inept new recruits.

Detailed information:

Starring: Lee Seung-gi, Cha Seung-won, Go Ara, Ahn Jae-hyun

Original release: May 7 – July 17, 2014

Link to watch: imdb.com/title/tt3693428/

Gu Family Book is a 2013 South Korean television series starring Lee Seung-gi and Bae Suzy. The fusion martial arts action historical drama is about a half-man half-monster who is searching for a centuries-old book that according to gumiho legend, contains the secret to becoming human. Lee Seung-gi plays Choi Kang-chi, a half-man, half-gumiho who longs to become fully human. He originally had a one-sided love for Chung-jo, but soon slowly fell in love with Yeo-Wool.

Dam Yeo Wool is a martial arts artist and the daughter of the chief of a clandestine group tasked with defending the region. She was dispatched to the Hundred Years Inn to keep an eye on and safeguard the lord. They met at the Hundred Years Inn, the most popular inn in the area, and fell in love despite Choi Kang Chi's half-humanity. It is up to Choi Kang Chi to restore order to their universe, and up to Dam Yeo Wool to ensure that Choi Kang Chi's half-mythical-creature side does not get the best of him.

Detailed information:

Starring: Lee Seung-gi, Bae Suzy, Sung Joon

Original release: April 8 – June 25, 2013

Link to watch: imdb.com/title/tt2816734/

The King 2 Hearts is a 2012 South Korean television series. The primary actors in this romance and action drama are Lee Seung-gi and Ha Ji-won. The plot of The King 2 Hearts revolves around a prince and an elite force instructor in North Korea. This drama depicts a love tale between two adversaries, South Korea and North Korea.

Lee Jae-ha (played by Lee Seung-gi) is a prince of the South Korean kingdom in The King 2 Hearts. His character echoes royal traditions. He is a political enthusiast with fluent words and a lovely face. Lee Jae-ha, despite his outward appearance, is a materialist who just considers his own desires. Lee Jae-ha is a young and gorgeous prince with a fictional modern South Korean background in the form of a constitutional monarchy from the Joseon Dynasty. He is materialistic and uninterested in politics. Jae-ha strives to find a means to avoid ascending to the throne to replace his brother, King Jae-kang (Lee Sung-min).

Detailed information:

Starring: Ha Ji-won, Lee Seung-gi

Original release: March 21 – May 24, 2012

Link to watch: imdb.com/title/tt2346947/

Brilliant Legacy is a 2009 South Korean television series starring Han Hyo-joo, Lee Seung-gi, Bae Soo-bin and Moon Chae-won. It was among the top-rated Korean dramas of the year; it maintained its number one spot in the viewership rating chart for 20 consecutive weeks and reached a peak rating of 47.1% for its last episode. Lee Seung-gi hit the pinnacle of his career and became known as one of the top actors when he appeared in Brilliant Legacy. Lee Seung-gi portrays Hwan Sun-woo in this drama, with numerous other well-known and skilled actors, including Han Hyo-joo (as Go Eun-sung), Yeon Joon-seok (as Eun-woo), and Jang Sook-ja (played as Ban Hyo-jung).

There are several narrative twists in the drama Brilliant Legacy as a result of Go Eun-sung's wonderful tale when he becomes acquainted with Hwan Sun-woo. Go Eun-sung once saved a grandma who was unconscious after tumbling down the stairs. The grandma turned out to be the President and Director of the Jin-sung food firm, while the grandmother was actually Hwan Sun-woo's grandmother. The entire narrative and battle began when the grandmother regained her memories and said that Go Eun-sung would be the successor of Jin-sung Food, formerly Hwan Sun-woo.

Detailed information:

Starring: Han Hyo-joo, Lee Seung-gi, Bae Soo-bin

Original release: April 25 – July 26, 2009

Link to watch: imdb.com/title/tt2283335/

Lee Seung-gi also participated in the drama My Girlfriend Is a Gumiho, also known as My Girlfriend Is a Nine-Tailed Fox. SBS produced this drama in 2010 for a total of 16 episodes. Lee Seung-gi plays Cha Dae-woong in this drama and also plays the opposite of a gorgeous actress, Shin Min-ah (played as Gumiho). This play also had a wide audience and admirers at the time since the narrative was so distinctive.

Lee Seung-gi plays Cha Dae-woong, an immature wannabe actor who lost his parents when he was young and was raised by his wealthy grandfather and aunt. When his grandpa attempts to enroll him in a severe boarding school, Dae-woong flees and finds up at a Buddhist temple, where a woman's voice instructs him to draw nine tails on a picture of a fox. He then encounters a female who tells him she was the gumiho in the artwork and is hiding her true identity from others. As they spend more time together, he discovers that, rather than the terrible figure of mythology, Mi-ho is adorable and full of wonder, and he falls in love with her.

Detailed information:

Starring: Lee Seung-gi, Shin Min-ah

Original release: August 11 – September 30, 2010

Link to watch: imdb.com/title/tt2255085/

Hong Chang-pyo directed the 2018 South Korean historical romance comedy-drama film The Princess and the Matchmaker. Shim Eun-kyung, Lee Seung-gi, Kim Sang-kyung, Yeon Woo-jin, Kang Min-hyuk, Choi Woo-shik, and Jo Bok-rae feature in the film. The film relates the story of Seo Do-yoon, a saju specialist who was given an order from the King to assist him to choose a mate for his daughter, Princess Song-hwa, depending on their fate. It is the second edition of Jupiter Film's three-part film project on Korean fortune-telling customs, following The Face Reader in 2013 and Feng Shui later that year.

After a lengthy period of famine, the palace arranges Princess Song Hwa's marriage in an attempt to right the cosmic wrong. Do Yoon, a renowned diviner is hired to discover the right partner who would have the finest marital harmony with the princess. Four potential husbands with various astrological signs are chosen from people all throughout the country. The princess, on the other hand, refuses to believe that her life mate will be picked entirely based on fortune reading and resolves to interview the contenders herself before making a final selection. Do Yoon discovers this when she escapes out of the palace and pursues her.

Detailed information:

Starring: Shim Eun-kyung, Lee Seung-gi, Kim Sang-kyung, Yeon Woo-jin

Original release: February 28, 2018

Link to watch: imdb.com/title/tt5961314/

Love Forecast is a 2015 South Korean romantic comedy film co-written and directed by Park Jin-pyo. Starring Lee Seung-gi and Moon Chae-won, the film depicts the relationship between men and women as being as delicate and complex as the weather.

Kim Hyun-woo (Moon Chae-won), a weather reporter, is recognized for her beauty and grace on television, but she drinks and curses a lot off-screen. Hyun-woo has known Kang Joon-soo (Lee Seung-gi) for 18 years, a mild-mannered elementary school teacher who gives too much of himself in his relationships yet constantly gets rejected. Joon-soo has secretly loved Hyun-woo for years, but she maintains there is no sexual desire between them, so he has had to watch while she fawns over married coworker Lee Dong-jin (Lee Seo-jin) and goes on a blind date with polite but dull photographer Yeom Hyo-bong (Jung Joon-young). Fate has it that the childhood pals are fated to be together.

Detailed information:

Starring: Lee Seung-gi, Moon Chae-wo, Lee Seo-jin

Original release: January 15, 2015

Link to watch: imdb.com/title/tt4315956/