Hayato Aida

Aida is Aoki's best friend. He possesses a flirtatious and kind nature, as well as being very self-assured. He doesn't have a very close relationship with Ida, but after exchanging a few words, he discovers that he is a good person. He initially tries to romantically set Ida up with Hashimoto. However, Aida subsequently begins to develop a great friendship with Hashimoto.