Hiroshi Seko

Hiroshi Seko (瀬古浩司) is a Japanese anime screenwriter. After serving as an episode screenwriter, he was given the role of head screenwriter for Seraph of the End. Since then, he has done screenwriting for many other series, such as critically acclaimed titles Attack on Titan, Mob Psycho 100, Vinland Saga, Jujutsu Kaisen, and Chainsaw Man. He frequently collaborates with Wit Studio and MAPPA.

Biography
Hiroshi Seko was born in Nagoya, Japan. After doing episode scripts for Panty & Stocking with Garterbelt, Attack on Titan and Terror in Resonance, Seko was put in charge of doing all the screenwriting in the anime adaptation of Seraph of the End. Seko also wrote the Attack on Titan: Lost Girls novel. In 2016, Seko did the screenwriting for the anime adaptation of Mob Psycho 100, which was nominated for anime of the year and won the award for best action series at the first Crunchyroll Anime Awards.

In 2019, he did the screenwriting for the anime adaptation of Vinland Saga and the second season of Mob Psycho 100, both of which were nominated for anime of the year at the Crunchyroll Anime Awards. Vinland Saga also won the award for best drama. In 2020, he did the screenwriting for Jujutsu Kaisen and Dorohedoro. At the Crunchyroll Anime Awards, the former won anime of the year, while the latter was nominated for anime of the year and best fantasy.

Television series

 * Panty & Stocking with Garterbelt (パンティ＆ストッキングwithガーターベルト) (2010) (episode screenwriter)
 * Attack on Titan (進撃の巨人) (2013–2023) (episode screenwriter (seasons 1–3); screenwriter (season 4))
 * Terror in Resonance (残響のテロル) (2014) (episode screenwriter)
 * Seraph of the End (終わりのセラフ) (2015) (screenwriter)
 * Ajin: Demi-Human (亜人) (2015–2016) (screenwriter)
 * Mob Psycho 100 (モブサイコ100) (2016–2023) (screenwriter)
 * Inuyashiki (いぬやしき) (2017) (screenwriter)
 * Banana Fish (2018) (screenwriter)
 * Vinland Saga (ヴィンランド・サガ) (2019–2023) (screenwriter)
 * Dorohedoro (ドロヘドロ) (2020) (screenwriter)
 * Deca-Dence (デカダンス) (2020) (screenwriter)
 * Jujutsu Kaisen (呪術廻戦) (2020–) (screenwriter)
 * The Idaten Deities Know Only Peace (平穏世代の韋駄天達) (2021) (screenwriter)
 * Summer Time Rendering (サマータイムレンダ) (2022) (screenwriter)
 * Chainsaw Man (チェンソーマン) (2022–) (screenwriter)
 * Zom 100: Bucket List of the Dead (ゾン100～ゾンビになるまでにしたい100のこと～) (2023) (screenwriter)
 * Wind Breaker (2024–2025) (screenwriter)
 * Dandadan (ダンダダン) (2024) (screenwriter)
 * Gachiakuta (ガチアクタ) (2025) (screenwriter)

Web series

 * Levius (レビウス) (2019) (screenwriter)
 * Spriggan (スプリガン) (2022) (screenwriter)
 * Gamera Rebirth (ガメラ-リバース-) (2023) (screenwriter)

Films

 * The Empire of Corpses (屍者の帝国) (2015) (screenplay)
 * Ajin: Demi-Human (亜人) (2017) (screenwriter)
 * Twittering Birds Never Fly: The Clouds Gather (囀る鳥は羽ばたかない The clouds gather) (2020) (screenwriter)
 * Jujutsu Kaisen 0 (劇場版 呪術廻戦 0) (2021) (screenwriter)

Novels

 * Attack on Titan: Lost Girls (進撃の巨人 LOST GIRLS) (2014)