Ashita no Hero Nyaagorō (Kanji: あしたのヒーローニャー五郎) is a 7-episode ONA series produced as part of a partnership between SEGA and Studio XYZ.
In a world of antropomorphic cats, the delusional teen Nyaagorō often acts as if he was a JRPG main character. Despite being called a "nutcase", he never loses hope, because he knows there'll be someone who needs his help.
- Mitsuhiro Ichiki as Nyaagorō, a delusional teenager who believes to be the hero of tomorrow.
- Ikue Ōtani as Akane, Nyaagoro's younger sister who tags along playing the "fairy counselor".
- Akio Ōtsuka as the fictional "Black Mouse", Nyaagorō's arch-nemesis.
- Shin'ichi Miyazawa as Mamoru, Nyaagoro's schoolfriend who often tags along on to his "game".
- Miyuki Sawashiro as Miki-chan, the beautiful girl Nyaagoro has a crush on.
- "Dear Heroes" by Serani Poji
Lyrics, Composition and Arrangement by Tomoko Sasaki
Arrangement by Naofumi Hataya and Yutaka Minobe