Chihiro Akiyama

秋山千洋

aka Stupid-Chii

Chihiro was born in the Wakayama Prefecture, so he speaks the Kansai dialect. Chihiro is a long-time friend of both [Tsutsumi](https://anilist.co/character/6575/Tsutsumi-Ikue) and [Mihane](https://anilist.co/character/14595/Nagafuji-Mihane). He later discovers [Umi's](https://anilist.co/character/3791/Kajiwara-Umi) secret but seems to have his own motives for not revealing it.