Keiichi Hasegawa

1998

• [ ] Ultraman Tiga & Ultraman Dyna: Warriors of the Star of Light (Screenplay) 

1999

• [ ] Ultraman Tiga & Ultraman Dyna & Ultraman Gaia: The Battle in Hyperspace (Writer) 

2000

• [ ] ウルトラマンダイナ SPECIAL (Writer) 
• [ ] Ultraman Tiga: The Final Odyssey (Screenplay) 

2001

• [ ] Godzilla, Mothra and King Ghidorah: Giant Monsters All-Out Attack (Screenplay) 

2002

• [ ] Ultraman Cosmos 2: The Blue Planet (Screenplay) 
• [ ] Ultraman Cosmos 2: The Blue Planet - Young Musashi Chapter (Writer) 

2003

• [ ] Ultraman Cosmos vs. Ultraman Justice: The Final Battle (Screenplay) 

2004

• [ ] Ultraman: The Next (Writer) 

2006

• [ ] Ultraman Mebius & Ultra Brothers (Writer) 

2008

• [ ] Superior Ultra 8 Brothers (Writer) 

2011

• [ ] Kamen Rider W Returns: Kamen Rider Accel (Writer) 
• [ ] Takamine - The Man By Which Cherry Blossoms Bloomed in America (Writer) 

2012

• [ ] My future of being executed (Writer) 
• [ ] Ultraman Saga (Writer) 
• [ ] Kamen Rider Fourze the Net Edition: It's Class Time, Everyone! (Writer) 

2013

• [ ] 009-1: The End of the Beginning (Writer) 

2014

• [ ] Kamen Rider Drive: Type ZERO! Episode 0 - Countdown to Global Freeze (Writer) 
• [ ] Kamen Rider Drive: Type: Televi-Kun - Hunter & Monster! Chase the Mystery of the Super Thief! (Writer) 

2016

• [ ] Kamen Rider Drive Saga: Kamen Rider Mach / Kamen Rider Heart (Writer) 
• [ ] Kamen Rider Ghost: Truth! The Secret of the Heroic Eyecons! (Writer) 

2023

• [ ] Gridman Universe (Screenplay) 
• [ ] SSSS.GRIDMAN Grand Episode (Writer) 
• [ ] SSSS.DYNAZENON Grand Episode (Screenplay) 

2024

• [ ] Kamen Rider Gotchard Ver.: Romeo and Juliet Complete Edition (Writer) 
• [ ] Kamen Rider Gotchard: The Future Daybreak (Writer) 

2025

• [ ] Abyssalis Revelation: Lachesis (Writer) 

2011

• [ ] Kamen Rider W Returns: Kamen Rider Accel (Drunken Man)