Details

Mei, the younger sister, was frustrated every day by the sounds of the AV that she heard from her brother's room. One day, Mei reunites with her childhood friend Mamoru. Mamoru is fascinated by Mei's grown-up appearance. The distance between the two is shortened at a stretch triggered by the sound of the AV heard from the brother's room next door. Mei, who was frustrated by the sound of her brother's AV, felt violently about her first sex with her childhood friend.