山野辺 麻優

She is the girlfriend of Kotarou's best friend Hajime and a childhood friend of Rina.

She is the same age as the main characters, but she is petite and has an adorable appearance reminiscent of a small animal. She is serious and family-oriented, and cooks meals for Hajime when his parents are often away.

When it comes to sex, she is shy and basically passive. However, she really likes Hajime, so she accepts what he does and is devoted to doing what he wants to do, even if she is shy about it.

From official site]