Teach You a Lesson
2026 · Action & adventure · Drama
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TV series / 2022
Twenty Five Twenty One
Episode directors
Jung Jee-hyun
In a time when dreams seem out of reach, a teen fencer pursues big ambitions and meets a hardworking young man who seeks to rebuild his life.
The story
In a time when dreams seem out of reach, a teen fencer pursues big ambitions and meets a hardworking young man who seeks to rebuild his life.
The seasons
Season 1
Season 1
Season details
The dreams of two young people are crushed by an overwhelming financial crisis in the 1990s. But when they reunite at the ages of 25 and 21, the spirited pair finds friendship and affection in times of adversity as they venture into adulthood together.
Cast
Kim Tae-riNa Hee-do
Nam Joo-hyukBaek Yi-jin
BonaKo Yu-rim
Choi Hyun-wookMoon Ji-woong
Lee Ju-myoungJi Seung-wan
Kim Hye-eunYang Chan-mi
Choi Myeong-binKim Min-chae
Joo Bo-youngLee Ye-ji
Choi Min-yeongBaek Yi-hyun
Kim So-hyunAdult Na Hee-do
Park Yoon-heeBaek Sung-hak
Kim Young-sunYi-jin's Mother
See more cast
So Hee-jungSeung-wan's Mother
Seo Jae-heeShin Jae-kyung
Lee Ye-jinPark Han-sol
Heo Ji-naYu-rim's Mother
Kim Dong-gyunYu-rim's Father
Lee Chan-jongSeo Joong-hyuk
Choi SiaBaek Su-yeong
Jung Hyung-sukKim Hak-gyu
Ok Joo-riAhyeon Supermarket owner
Park YoonJung Da-yeong
Cho Min-wookKwon Dung-uk
Lee Seon-guNational fencing team coach
Park Jung-pyoYi-jin's maternal uncle
Yoon Se-woongSeo Yeong-seong
Moon Woo-binKang Ji-soo
Bang Eun-jeongLee Da-seul
Jung Chung-guMyeongjin Book Rentals owner
Ok Ye-rinNa Hee-do (young)
Kim Bum-joonJi-woong's friend
Kim Ha-ruNational team fencer
Lee Dong-kyuUBS Network Sports anchor
Choi Tae-joonJung Ho-jin
Baek Suk-kwangNa Sung-jin
Jung Yong-juDelinquent boy
Lee Joong-okFencing club coach
Ri MinNewspaper delivery subscriber · Chinese restaurant owner
Bae Seong-ilMr. Baek's ex-employee
Kyung Da-eunKo Yu-rim (young)
Jo Nam-heeTaeyang High School headmaster
Seo Jeong-binKim Jong-chan
Yeon Seung-binChoi Won-hwan
Jeon YeongYogurt lady
Lee Kyung-ohUBS Network director
Han Gyu-hyukKang Hak-rae
Garrison Farquharson-KeenerAlan Smith
Shin Yeon-sookHee-do's grandmother
Kim Joon-hyungSanga University coach
Yoon Ju-manPD Park
Lee Si-hooUBS Network cameraman
Park Ji-hoUBS Network documentary staff
Oh Choong-geunUBS Network staff
Kim Tae-moonUBS Network cameraman
Jeong Young-doUBS anchorman
Ji Hyun-wooJungle Prince bassist
Kang Sung-hwaJungle Prince guitarist
Im Woo-chanJungle Prince drummer
Kang Seong-jinJungle Prince keyboardist
Shin Hee-cheolBuilder · Detective Kim
Park Ki-deokLee Gi-hun
Kwon Dan-aNational team fencer
Ji Yun-seongReporter
Yoon Tae-yiSeon Jung Girls' High School Fencing Team Player
Kang HoonBaek Yi-hyun (adult)
Park Jin-sooSeo Hye-jin
Jung Yoo-minHwang Bo-mi
Kim Tae-yooKim Yoo-jin
Lee Ki-bbeumBo-mi's friend
Song Young-jooBo-mi's friend
Yu BeeYi-jin's friend
Jang Yeon-wooYi-jin's friend
Lee Ha-jooFencing team player
Shin Ga-eunJang Chae-hee
Im Yong-soonSecurity guard
Kang Hak-sooLoen Hotel employee
Park Bu-keonMr. Baek's ex-employee
Jo Hyeon-jinTaeyang High School teacher (Eps 2)
Ma Jeong-pilTaeyang High School faculty member
Jeon Se-yongPasserby
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