Sagishima Haruka

Hobbies: Reading, playing online games (secret)
Likes: Studying, vanilla ice cream
Dislikes: Konjac, shiitake mushrooms

A honest and kind girl who is very popular with the other girls. She has outstanding grades but does not let it go to her head, and instead acts humble. She finds the fact that Seita is the only guy in their Department unpleasant, and as such tends to call him out often; in fact, she uses her popularity as a weapon against him. Haruka also relaxes while on the internet and plays online games as well, but she keeps this as a secret from everyone.