Hiroshi Seko

Biography

Hiroshi Seko (瀬古 浩司, Seko Hiroshi) is a Japanese animation-oriented screenwriter.

Career Overview

Hiroshi Seko has 39 screen credits in a career dating back to 2010. Their work spans 7 cinematic universes — most prominently Jujutsu Kaisen Collection with 3 titles. Signature works include JUJUTSU KAISEN, Chainsaw Man - The Movie: Reze Arc, Mob Psycho 100. Explore the interactive character relationship maps on each title page to trace how their roles connect across franchises.

Personal Facts

Known For

Writing

Gender

male

Known Credits

39

Birth Date

1981-01-01 00:00:00

Birth Place

Nagoya, Aichi, Japan

Known For

• 

  JUJUTSU KAISEN
• 

  Chainsaw Man - The Movie: Reze Arc
• 

  Mob Psycho 100
• 

  Gachiakuta
• 

  Dan Da Dan
• 

  Attack on Titan

Associated Universes

Universe traveler — spans 7 universes

• Jujutsu Kaisen Collection (3 titles)
• Ajin Collection (3 titles)
• Dandadan: Collection (2 titles)
• Twittering Birds Never Fly Collection (2 titles)
• Chainsaw Man Collection (1 titles)
• Attack on Titan Films (1 titles)
• Project Itoh Collection (1 titles)

Frequent Collaborators

• Natsuki Hanae (3 collaborations)
• Marina Inoue (2 collaborations)
• Reina Ueda (1 collaborations)
• Kikunosuke Toya (1 collaborations)
• Shiori Izawa (1 collaborations)
• Tomori Kusunoki (1 collaborations)
• Shogo Sakata (1 collaborations)
• Fairouz Ai (1 collaborations)
• Karin Takahashi (1 collaborations)
• Yuuya Uchida (1 collaborations)

Credits

• writing (39 credits)

  • Chainsaw Man - Assassins Arc

    writer

    writing
    2026
  • Jujutsu Kaisen: About the Culling Game

    series composition

    writing
    2026
  • JUJUTSU KAISEN: Execution

    screenplay

    writing
    2025
  • Chainsaw Man - The Movie: Reze Arc

    screenplay

    writing
    2025
  • Gachiakuta

    series composition

    writing

    - Field Trip (2025) ... series composition writing

    - The Man Who Will Be Stronger (2025) ... series composition writing

    - The Power of Protection (2025) ... series composition writing

    - Race Against Time (2025) ... series composition writing

    - Ensign (2025) ... series composition writing
    2025
  • JUJUTSU KAISEN: Hidden Inventory / Premature Death - The Movie

    series composition

    writing
    2025
  • DAN DA DAN: Evil Eye

    series composition

    writing
    2025
  • Dan Da Dan

    series composition

    writing

    - Clash! Space Kaiju vs. Giant Robot! (2025) ... series composition writing

    - Hey, It's a Kaiju (2025) ... series composition writing

    - The Secret Art of Being Attractive (2025) ... series composition writing

    - I Want to Rebuild the House (2025) ... series composition writing

    - You Can Do It, Okarun! (2025) ... series composition writing
    2024
  • DAN DA DAN: First Encounter

    writer

    writing
    2024
  • WIND BREAKER

    series composition

    writing

    - STRENGTH FOR ANOTHER (2025) ... series composition writing

    - AFTER THE STORM (2025) ... series composition writing

    - SALVATION (2025) ... series composition writing

    - SHALL WE DANCE? (2025) ... series composition writing

    - SHARED FRONTLINES (2025) ... series composition writing
    2024
  • Attack on Titan: THE LAST ATTACK

    screenplay

    writing
    2024
  • Zom 100: Bucket List of the Dead

    series composition

    writing

    - Hometown of the Dead III (2023) ... series composition writing

    - Hometown of the Dead II (2023) ... series composition writing

    - Hometown of the Dead I (2023) ... series composition writing

    - Treehouse of the Dead (2023) ... series composition writing

    - Sushi & Hot Springs of the Dead (2023) ... series composition writing
    2023
  • Chainsaw Man

    series composition

    writing

    - KATANA VS. CHAINSAW (2022) ... series composition writing

    - MISSION START (2022) ... series composition writing

    - BRUISED & BATTERED (2022) ... series composition writing

    - FROM KYOTO (2022) ... series composition writing

    - GUNFIRE (2022) ... series composition writing
    2022
  • Summer Time Rendering

    series composition

    writing

    - [I'm Home] (2022) ... series composition writing

    - Summertime Re-Rendering (2022) ... series composition writing

    - Everlasting Night (2022) ... series composition writing

    - Return (2022) ... series composition writing

    - Shinpei Ajiro's Longest Day (2022) ... series composition writing
    2022
  • Jujutsu Kaisen 0

    screenplay

    writing
    2021
  • Twittering Birds Never Fly: Don't Stay Gold

    screenplay

    writing
    2021
  • Star Wars: Visions

    - The Bounty Hunters (2025) ... writer writing
    2021
  • JUJUTSU KAISEN

    series composition

    writing

    - Sendai Colony (2026) ... series composition writing

    - Tokyo Colony No. 1 (5) (2026) ... series composition writing

    - Tokyo Colony No. 1 (4) (2026) ... series composition writing

    - Tokyo Colony No. 1 (3) (2026) ... series composition writing

    - Tokyo Colony No. 1 (2) (2026) ... series composition writing
    2020
  • Twittering Birds Never Fly: The Clouds Gather

    screenplay

    writing
    2020
  • Dorohedoro

    series composition

    writing

    - BALLAD OF THE HAPPY DESTRUCTION / QUESTION & ANSWER (2026) ... series composition writing

    - LUCKY JERK / ADVANCED MAGIC (2026) ... series composition writing

    - MOSH PIT / CROSS-EYES IN THE NEWS (2026) ... series composition writing

    - CHAOS SHOCK / BLACK BOX / ROOM 501 (2026) ... series composition writing

    - MY SECRET PLAN / CROSS-EYE EXPEDITION / DEFORMED REUNION (2026) ... series composition writing
    2020
  • Vinland Saga

    series composition

    writing

    - Home (2023) ... series composition writing

    - Two Paths (2023) ... series composition writing

    - The King of Rebellion (2023) ... series composition writing

    - Courage (2023) ... series composition writing

    - Pain (2023) ... series composition writing
    2019
  • Banana Fish

    screenplay

    writing

    - The Catcher in the Rye (2018) ... series composition writing

    - For Whom the Bell Tolls (2018) ... series composition writing

    - As I Lay Dying (2018) ... series composition writing

    - The Undefeated (2018) ... series composition writing

    - The Unvanquished (2018) ... series composition writing
    2018
  • DARLING in the FRANXX

    - Stargazers (2018) ... writer writing

    - Jian (2018) ... writer writing

    - Punishment and Confession (2018) ... writer writing

    - Partner Shuffle (2018) ... writer writing
    2018
  • The Legend of the Galactic Heroes: Die Neue These

    - The Capture of Iserlohn (2) (2018) ... writer writing
    2018
  • Ajin: Demi-Human

    writer

    writing
    2017
  • Kakegurui

    - The Woman Who Bets Her Life (2017) ... writer writing
    2017
  • Ajin: Demi-Human – Collide

    series composition

    writing
    2016
  • Mob Psycho 100

    series composition

    writing

    - Confession ~The Future~ (2022) ... series composition writing

    - Mob 3 ~Trauma~ (2022) ... series composition writing

    - Mob 2 ~Rival~ (2022) ... series composition writing

    - Mob 1 ~Moving~ (2022) ... series composition writing

    - Transmission 2 ~Encountering the Unknown~ (2022) ... series composition writing
    2016
  • Ajin: Demi-Human – Confront

    series composition

    writing
    2016
  • Ajin

    series composition

    writing

    - I Make Promises Too, Satō-san (2016) ... series composition writing

    - It Sounds Interesting, So I Guess That's Okay (2016) ... series composition writing

    - This Really Is War (2016) ... series composition writing

    - I Won't Do It (2016) ... series composition writing

    - You're the One Who Is Getting in the Way (2016) ... series composition writing
    2016
  • Kabaneri of the Iron Fortress

    - The Attacking Weak (2016) ... writer writing

    - Gathering Light (2016) ... writer writing

    - Inescapable Darkness (2016) ... writer writing
    2016
  • Ajin: Demi-Human – Compel

    series composition

    writing
    2015
  • The Empire of Corpses

    screenplay

    writing
    2015
  • Seraph of the End

    series composition

    writing

    - Seraph of the End (2015) ... series composition writing

    - Arrogant Love (2015) ... series composition writing

    - Yu and Mika (2015) ... series composition writing

    - Traitorous Allies (2015) ... series composition writing

    - Demon's Lullaby (2015) ... series composition writing
    2015
  • Japan Animator Expo

    - COMEDY SKIT 1989 (2015) ... writer writing
    2014
  • Terror in Resonance

    - VON (2014) ... writer writing

    - Highs & Lows (2014) ... writer writing

    - Ready or Not (2014) ... writer writing

    - Break Through (2014) ... writer writing
    2014
  • Attack on Titan

    series composition

    writing

    - The Dawn of Humanity (2022) ... series composition writing

    - Retrospective (2022) ... series composition writing

    - Traitor (2022) ... series composition writing

    - Night of the End (2022) ... series composition writing

    - Pride (2022) ... series composition writing
    2013
  • Kill la Kill

    - Trigger (2013) ... writer writing
    2013
  • Panty & Stocking with Garterbelt

    - D.C. Confidential (2010) ... scenario writer writing

    - Nothing to Room (2010) ... scenario writer writing

    - ... of the Dead (2010) ... scenario writer writing

    - Vomiting Point (2010) ... scenario writer writing

    - Sex and Daten City (2010) ... writer writing
    2010