Personal details
Born:
- Born Place: Nagoya, Aichi, Japan
Also Known As:
Kouji Seko, Koji Seko, Kōji Seko, 瀬古 浩司
Hiroshi Seko
Hiroshi Seko is a prolific Japanese anime screenwriter and series composer, renowned for his work on several of the most critically acclaimed and popular anime titles of the past decade. Born in Nagoya, Japan, in 1981, Seko began his active career in the industry around 2010, initially contributing episode scripts to series like Panty & Stocking with Garterbelt and Attack on Titan (Season 1–3). His breakthrough came when he was given the role of chief scriptwriter/series composer for the anime adaptation of Seraph of the End (2015), where he oversaw the entire narrative. Since then, he has consistently been entrusted with adapting major, action-heavy, and dramatically complex manga into anime, frequently collaborating with renowned studios like Wit Studio and MAPPA. His extensive list of notable works includes serving as the lead screenwriter or series composer for Mob Psycho 100 (which won Best Action at the inaugural Crunchyroll Anime Awards), Vinland Saga (which won Best Drama), Dorohedoro, Chainsaw Man, and the massively successful Jujutsu Kaisen (which won Anime of the Year). His film credits include writing the screenplay for the novel Attack on Titan: Lost Girls and the movie Jujutsu Kaisen 0, further solidifying his reputation as a versatile and high-demand storyteller in the modern anime landscape.
