本井 麻梨奈

She is the boke amongst the three. She has big breasts and likes to go at her own pace.

When the other two are at odds with each other, she is the one who calms downs the situation.

She is open-minded about her sexuality, but is also quite violent. She thinks of the main character as her cute little brother. She wants to help the main character, who says he has no girlfriend, and teaches him how to have sex with her.