|First Appearance||Time's Arrow, Flying Differently|
Hideaki is a ninja of the Ayakami Clan.
Powers and AbilitiesEdit
Like all ninja of the Ayakami Clan, Hideaki is a skilled warrior and is capable of using a pain-suppressing ninjutsu.
In Of Ninja Noobs, Jump-Scare Booty, and Unlocking Fuckable Characters, Ninjette and Oyuki reveal themselves and engage Hideaki and the other Ayakami Clan ninja in combat.
In Deflowered and Dispassionate, Ninjette has finished off most of the Ayakami Clan ninja; however, she is exhausted, and Oyuki has stopped helping her. Hideaki, Masahiro, and Yuki, the final three Ayakami Clan ninja standing, team up on her.
In You Will Address Me as "Hime-Sama", Hideaki, Masahiro, and Yuki nearly manage to defeat Ninjette. However, she sows discord among them by revealing Hideaki and Yuki's secret relationship, then kills Hideaki by decapitating him.