宮部 綾子

Mimasaka siblings' childhood friend. She is also Koharu's classmate and best friend and Akito's senpai as well as his first love.

Usually a honor student. Calm, dignified and collected, always willing to listen and offer a helpful advice.... and yet at the same time stalker, tease and molester when it comes to Akito. Even though she turned down his confession she takes candid photos, wiretaps him and feels him up in the train.

Has entire notebook of things she wishes to do to Akito.