Keiichi Hasegawa

Kamen Rider

1971 · ★ 6.4 · Writer, Humagear, Series Composition

Astro Boy

2003 · Writer

No. 1 Sentai Gozyuger

2025 · Writer

Ultraman Dyna

1997 · Writer

Rage of Bahamut

2014 · ★ 7.6 · Writer, Series Composition

Ultraman Mebius

2006 · Writer

Ultraman Cosmos

2001 · Writer

Ultraman Gaia

1998 · Writer

SSSS.DYNAZENON

2021 · ★ 7.4 · Writer, Series Composition

Cackling Kitarou

2007 · Writer

Kamen Rider Ghost

2015 · Writer

SSSS.GRIDMAN

2018 · ★ 7.2 · Writer, Series Composition

Ultraman Ginga

2013 · Creator, Writer

Ultraman Nexus

2004 · Screenplay, Series Composition

Kamen Rider Drive

2014 · Writer

The Big O

1999 · Writer

Kamen Rider Gotchard

2023 · Writer, Story, Series Composition

Cutie Honey: The Live

2007 · 68% · Writer

Phoenix

2004 · Writer

Godzilla, Mothra and King Ghidorah: Giant Monsters All-Out Attack

2001 · 74% · Screenplay

Ultraman Tiga: The Final Odyssey

2000 · Screenplay

Gridman Universe

2023 · Screenplay

Superior Ultra 8 Brothers

2008 · Writer

009-1: The End of the Beginning

2013 · 49% · Writer

Kamen Rider Gotchard: The Future Daybreak

2024 · Writer

Ultraman Tiga & Ultraman Dyna & Ultraman Gaia: The Battle in Hyperspace

1999 · Writer

Ultraman Saga

2012 · Writer

Ultraman: The Next

2004 · Screenplay

Ultraman Cosmos 2: The Blue Planet

2002 · Screenplay

Ultraman Mebius & Ultra Brothers

2006 · Writer

Ultraman Cosmos vs. Ultraman Justice: The Final Battle

2003 · Screenplay

SSSS.GRIDMAN Grand Episode

2023 · Writer

Kamen Rider Drive Saga: Kamen Rider Mach / Kamen Rider Heart

2016 · Writer

Ultraman Tiga & Ultraman Dyna: Warriors of the Star of Light

1998 · Screenplay

No. 1 Sentai Gozyuger: Polar Beginning

2026 · Writer

SSSS.DYNAZENON Grand Episode

2023 · Screenplay

Abyssalis Revelation: Lachesis

2025 · Writer

Kamen Rider W Returns: Kamen Rider Accel

2011 · ★ 6.6 · Writer, Drunken Man

Kamen Rider Gotchard Ver.: Romeo and Juliet Complete Edition

2024 · Writer

Kamen Rider Fourze the Net Edition: It's Class Time, Everyone!

2012 · Writer

Kamen Rider Drive: Type: Televi-Kun - Hunter & Monster! Chase the Mystery of the Super Thief!

2014 · Writer

Ultraman Cosmos 2: The Blue Planet - Young Musashi Chapter

2002 · Writer

Takamine - The Man By Which Cherry Blossoms Bloomed in America

2011 · Writer

ネット版 仮面ライダーフォーゼ みんなで授業キターッ!

2012 · Writer

ウルトラマンダイナ SPECIAL

2000 · Writer

Kamen Rider Drive: Type ZERO! Episode 0 - Countdown to Global Freeze

2014 · Writer

Kamen Rider Ghost: Truth! The Secret of the Heroic Eyecons!

2016 · Writer

My future of being executed

2012 · Writer

Kamen Rider

1971 · ★ 6.4 · Writer, Humagear, Series Composition

Rage of Bahamut

2014 · ★ 7.6 · Writer, Series Composition

SSSS.DYNAZENON

2021 · ★ 7.4 · Writer, Series Composition

SSSS.GRIDMAN

2018 · ★ 7.2 · Writer, Series Composition

Ultraman Nexus

2004 · Screenplay, Series Composition

Kamen Rider Gotchard

2023 · Writer, Story, Series Composition

Kamen Rider Saber

2020 · Series Composition

Graveyard Kitaro

2008 · Script

Kamen Rider W Returns: Kamen Rider Accel

2011 · ★ 6.6 · Writer, Drunken Man

Dream Hazard

1998 · Director of Photography