The son, Kenshi, who had just transferred schools, brought a friend home. Mother Mikki greeted them with a smile, but that day, the bra she was supposed to have drying went missing, and suspicion fell on the friend Satoru. The class leader Gaku, knowing that Satoru was suspected, plotted revenge against the Matsuzaka family. Gaku stayed over at Kenshi's house and attacked Mikki in the middle of the night, photographing her exposed breasts. Using these photos, Gaku and Satoru forced Mikki to go braless and invited their friends to indulge in their youthful desires…
