Writing
Keiichi Hasegawa
Known for
1971
Kamen Rider
Humagear
TV
2007
Cackling Kitarou
Writer
TV
2014
Rage of Bahamut
Series Composition
TV
2025
No. 1 Sentai Gozyuger
Writer
TV
2003
Astro Boy
Writer
TV
2018
SSSS.GRIDMAN
Writer
TV
2021
SSSS.DYNAZENON
Writer
TV
2014
Kamen Rider Drive
Writer
TV
1999
The Big O
Writer
TV
1998
Ultraman Gaia
Writer
TV