Hiroshi Seko (Japanese:瀬古浩司,Hepburn:Seko Hiroshi) is a Japaneseanimescreenwriter. After serving as an episode screenwriter, he was given the role of head screenwriter forSeraph of the End. Since then, he has done screenwriting for many other series, such as critically acclaimed titlesAttack on Titan,Mob Psycho 100,Vinland Saga,Jujutsu Kaisen, andChainsaw Man. He frequently collaborates withWit Studio andMAPPA.

Hiroshi Seko was born inNagoya, Japan.^[1] After doing episode scripts forPanty & Stocking with Garterbelt,Attack on Titan andTerror in Resonance, Seko was put in charge of doing all the screenwriting in the anime adaptation ofSeraph of the End.^[2] Seko also wrote theAttack on Titan: Lost Girls novel.^[3] In 2016, Seko did the screenwriting for the anime adaptation ofMob Psycho 100, which was nominated for anime of the year and won the award for best action series at the firstCrunchyroll Anime Awards.^[4][5][6]

In 2019, he did the screenwriting for the anime adaptation ofVinland Saga and the second season ofMob Psycho 100, both of which were nominated for anime of the year at the Crunchyroll Anime Awards.^[7][8][9]Vinland Saga also won the award for best drama.^[10] In 2020, he did the screenwriting forJujutsu Kaisen andDorohedoro.^[11][12] 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.^[13][14]

• Panty & Stocking with Garterbelt (パンティ＆ストッキングwithガーターベルト,Panti ando Sutokkingu wizu Gātāberuto) (2010) (episode screenwriter)^[2]
• Attack on Titan (進撃の巨人,Shingeki no Kyojin) (2013–2023) (episode screenwriter (seasons 1–3);^[2] screenwriter (season 4))^[15]
• Terror in Resonance (残響のテロル,Zankyō no Teroru) (2014) (episode screenwriter)^[2]
• Seraph of the End (終わりのセラフ,Owari no Serafu) (2015) (screenwriter)^[2]
• Ajin: Demi-Human (亜人,Ajin) (2015–2016) (screenwriter)^[16]
• Mob Psycho 100 (モブサイコ100,Mobu Saiko Hyaku) (2016–2023) (screenwriter)^[4]
• Inuyashiki (いぬやしき) (2017) (screenwriter)^[17]
• Banana Fish (2018) (screenwriter)^[18]
• Vinland Saga (ヴィンランド・サガ,Vinrando Saga) (2019–2023) (screenwriter)^[7]
• Dorohedoro (ドロヘドロ,Doro-hedoro) (2020) (screenwriter)^[12]
• Deca-Dence (デカダンス,Dekadansu) (2020) (screenwriter)^[19]
• Jujutsu Kaisen (呪術廻戦) (2020–) (screenwriter)^[11]
• The Idaten Deities Know Only Peace (平穏世代の韋駄天達,Heion Sedai no Idaten-tachi) (2021) (screenwriter)^[20]
• Summer Time Rendering (サマータイムレンダ,Samā Taimu Renda) (2022) (screenwriter)^[21]
• Chainsaw Man (チェンソーマン,Chensō Man) (2022–) (screenwriter)^[22]
• 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～,Zon 100: Zonbi ni Naru made ni Shitai 100 no Koto) (2023) (screenwriter)^[23]
• Wind Breaker (2024–2025) (screenwriter)^[24]
• Dandadan (ダンダダン) (2024) (screenwriter)^[25]
• Gachiakuta (ガチアクタ) (2025) (screenwriter)^[26]
• Rooster Fighter (ニワトリ・ファイター,Niwatori Faitā) (TBA) (screenwriter)^[27]

• Levius (レビウス,Rebiusu) (2019) (screenwriter)^[28]
• Spriggan (スプリガン,Supurigan) (2022) (screenwriter)^[29]
• Gamera Rebirth (ガメラ-リバース-,Gamera-ribāsu-) (2023) (screenwriter)^[30]

• The Empire of Corpses (屍者の帝国,Shisha no Teikoku) (2015) (screenplay)^[31]
• Ajin: Demi-Human (亜人,Ajin) (live-action) (2017) (screenwriter)^[16]
• Twittering Birds Never Fly: The Clouds Gather (囀る鳥は羽ばたかない The clouds gather,Saezuru Tori wa Habatakanai: The Clouds Gather) (2020) (screenwriter)^[32]
• Jujutsu Kaisen 0 (劇場版 呪術廻戦 0,Gekijō-ban Jujutsu Kaisen 0) (2021) (screenwriter)^[33]
• Chainsaw Man – The Movie: Reze Arc (劇場版 チェンソーマン レゼ篇,Gekijō-ban Chensō Man Reze-hen) (2025) (screenwriter)^[34]

• Attack on Titan: Lost Girls (進撃の巨人 LOST GIRLS,Shingeki no Kyojin: Lost Girls) (2014)^[3]

• Hiroshi Seko atAnime News Network's encyclopedia

• Anime screenwriters
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• Writers from Nagoya

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