Aya Kominato (小湊 亜耶 Kominato Aya) is outgoing and spontaneous, Aya seems to be the only character without social problems. He is very open, caring, and sometimes even dense. He has an unrequited crush on Shuko. Aya harbors a hatred for Tanaka-sensei, and initially did not like Kou due to his relation to him. He is good at Math. He is the only one Kou has told about his romantic feelings for Futaba Yoshioka.

Personality: Aya is someone who is both cheerful and friendly. He is also somewhat playful and sneaky as Kou stated that Aya bought some porn magazine at their first excursion. Kou describes Aya as a good person overall.