After graduating from the Nagoya University of Arts, Hayase became employed at IshimoriPro in 1989 as an assistant.
After Ishinomori's passing, Hayase fell in charge of character design for future Kamen Rider adaptations as well as acting as supervisor for the anime adaptations of Genma Taisen, 009-1, and Android Kikaider- The Animation and its OVA sequel Kikaider 01- The Animation.
- Cyborg 009: Trump Tower (2010, script by Ryota Yamaguchi)
- Sea Jetter Kaito (2010-2014)
- Cyborg 009 Conclusion GOD'S WAR (manga version, April 2012-January 2013 chapters, replaced by Sugar Sato for remainder of series)
- "Cyborg 009"-related 4koma for the Asahi Shimbun (2014)
- Genma Taisen: REBIRTH (2014- , script by Kyoichi Nanatsuki)
- Kikaider00 (1999-2002)
- Hero Saga (2002)
- Kamen Rider EVE -MASKER RIDER GAIA- (2004-2006)
- Voicelugger (1999)
- Kamen Rider Agito (2001-2002)
- Kamen Rider Ryuki (2002-2003)
- Kamen Rider 555 (2003-2004)
- Kamen Rider Hibiki (2005-2006)
- Kamen Rider Kabuto (2006-2007)
- Kamen Rider Den-O (2007-2008)
- Kamen Rider Kiva (2008-2009)
- Kamen Rider Decade (2009)
- Kamen Rider G (2009)
- Kamen Rider W (2009-2010)
- Kamen Rider OOO (2010-2011)
- Android Kikaider- The Animation (2000)
- Kikaider 01- The Animation (2001)
- Genma Taisen: Eve of Mythology (2002)
- 009-1 (2006)
- In Hayase's chapters of GOD'S WAR, he was fond of using other Ishinomori characters as templates for the new characters' designs, as well as referencing moments from other series like Kamen Rider Black and Inazuman. Particular characters he referenced included Ishinomori's "Jun" character as Alain Deneuve, and Junpei from Tarao Bannai as Alain's friend Canet.
- These two characters (Jun and Junpei) were also used for Hayase's manga-style character designs of Philip and Shotaro Hidari for Kamen Rider W.