Nanami Odera

Nanami Odera is Shuuichi's older sister, she's very attached to him and she wants to help him to became an adult. After that an exceptional accident occurs to Shuuichi plan for spending the summer vacation studing for the college admission's exams, she invited him to the her university. Later she was surprised having sex with him by her roomates in the bathroom of the female school's dormitory and after their explanation, the girls agreed to help her and let him live with them for the summer.