Kōji Seo

is a Japanese manga creator from Shobara, Hiroshima, Japan.

He has stated in an interview that he was a member of his high school's track and field team and that he loves to watch baseball, both of which are emphasized in his hit manga Suzuka.

He debuted in 1996 with the one-shot HALF & HALF in Magazine Fresh. His first three series, W's, Cross Over and Suzuka mixed the genres of sports with high school romance. W's used tennis, Cross Over featured basketball, while Suzuka focused on track and field.

He was an assistant to Tsukasa Ōshima, and respects Fujiko F. Fujio and Masahito Soda.

Works

Manga

(2000–2001 Magazine Special; Kodansha) Cross Over (2002–2003 Weekly Shōnen Magazine; Kodansha) (2004–2007 Weekly Shōnen Magazine; Kodansha) (2007 Kodansha) (2005 Shōnen Magazine Wonder; Kodansha) HALF & HALF (1996 Magazine Fresh; 2007 Magazine Special (reprint); Kodansha) (2007 Magazine Special; Kodansha) (2008–2014 Weekly Shōnen Magazine; Kodansha) Princess Lucia (2009–2015 Monthly Comic Blade; Mag Garden) (2010–2011 Bessatsu Shōnen Magazine; Kodansha) Half & Half (2012–2016 Bessatsu Shōnen Magazine; Kodansha) (2014–2018 Weekly Shōnen Magazine; Kodansha) Hitman (2018–2021) Weekly Shōnen Magazine; Kodansha) (2021–2025) Weekly Shōnen Magazine; Kodansha) (2026–present) Weekly Shōnen Magazine; Kodansha)

Anime Suzuka Episode 8 (2005) – Track & field club member Sayonara, Zetsubou-Sensei Episode 3 (2007) – End card The Heroic Legend of Arslan Episode 3 (2015) – End card Fuuka (2017) – Insert song lyrics, theme song lyrics Animation x Paralympic Episode 8 (2019) – Original creator

Video games

Fire Emblem Heroes (2017) – Lute artwork

Other High School Girl Kimchi (2009, Hokubi Construction) – Design