Orihara Aina

Your precious childhood friend has become a serious, hardworking, indoor-type studious girl. She has grown her hair long and wears glasses. Since entering the academy, without getting involved in sports or anything like that, she has focused solely on studying for entrance exams. Actually, she isn't naturally gifted, but through extraordinary effort, she maintains "above-average" grades.

However, as she became more conscious of protagonist as a member of the opposite sex, her study time decreased, and her grades began to drop. In order to go to the same higher education institution as you, she begged her parents for a private tutor. Perhaps because she lacks an outlet like sports, she has the most repressed or "twisted" sexual desire among the three routes.

While keeping her feelings for the protagonist hidden, deep down in her heart, she also thinks, "I want to experience that soon." Even while sitting at her desk to study, she often ends up letting out moist sighs and making lewd noises before she knows it... There is no way "bad males" would overlook such a perverted girl with such a serious face.