Twenty Five Twenty One
Choi Hyun-wookMoon Ji-woong Lee Ju-myoungJi Seung-wan Choi Myeong-binKim Min-chae Choi Min-yeongBaek Yi-hyun Kim So-hyunAdult Na Hee-do Park Yoon-heeBaek Sung-hak Kim Young-sunYi-jin's Mother So Hee-jungSeung-wan's Mother Seo Jae-heeShin Jae-kyung Kim Dong-gyunYu-rim's Father Lee Chan-jongSeo Joong-hyuk Jung Hyung-sukKim Hak-gyu Ok Joo-riAhyeon Supermarket owner Lee Seon-guNational fencing team coach Park Jung-pyoYi-jin's maternal uncle Yoon Se-woongSeo Yeong-seong 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 Baek Suk-kwangNa Sung-jin Jung Yong-juDelinquent boy Lee Jung-okFencing club coach Ri MinNewspaper delivery subscriber 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 Lee Kyung-ohUBS Network director Garrison Farquharson-KeenerAlan Smith Shin Yeon-sookHee-do's grandmother Kim Joon-hyungSanga University coach Yoon Tae-yiSeonjung Girls' High School fencing team player 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 Kwon Dan-aNational team fencer Kang HoonBaek Yi-hyun (adult) Lee Ki-bbeumBo-mi's friend Song Young-jooBo-mi's friend Jang Yeon-wooYi-jin's friend Lee Ha-jooFencing team player Lim Yong-soonSecurity guard Kang Hak-sooLoen Hotel employee Park Bu-keonMr. Baek's ex-employee Hyeon JinTaeyang High School teacher (Eps 2) Ma Jeong-pilTaeyang High School faculty member You EunaElephant Snacks diner Seo Young-samKorean history teacher Son Young-soonBus passenger Hong Eun-jeongJob interviewee Koo Ja-geonJob interviewee Choi Kyo-sikNeighbourhood man Kim Nam-iYi-jin's paternal aunt Jang Jun-hyeonYi-jin's acquaintance / Director of Han River C&T Lee So-yoonKim Min-chae (young) Lee Jae-wooPhoto studio owner Kim Ji-hoMBS TV network employee Song Yo-sepMBS TV network department head Jeong Jong-hoonKBY TV network department head Bae Yu-riHotel receptionist Bae Hyun-kyungUBS Network Sports department staff Park Eun-youngNeighbourhood woman Yun Bu-jinNeighbourhood woman Goo Si-yeonJae-kyung's co-worker Kwak Myung-hwaFencing association executive Kim Seong-yongDisciplinary committee member Nam Dong-haDisciplinary committee member Kim Si-kookUniversity teaching assistant Cha Yong-hwanHwang Ho-jin Jeon Jun-wooRestaurant host Park Yu-milUBS Network staff Jeong Hyeon-cheolDetective Park Chan-youngUpset diner Lee Sang-kyungYang Chan-mi (young) Kim Mi-hyeShin Jae-kyung (young) Byun Yun-jeongJi-woong's mother Cha Mi-kyungVictim's mother Son Dong-sooSports agency employee Choi Nam-wookFencing association employee Lee Sung-ilUBS Network staff Ha Seung-yeonHospital hallway woman Kang Moon-kyungUBS director 2009 Park BinUBS Network staff Park Bo-baeUBS Network staff Kim Nam-heeCellphone store employee Jaspreet KaurReporter (voice) Kim Seon-taeExecutive Producer Kim Young-kyuExecutive Producer TaeilTheme Song Performance 
