[Reducing Mosaic]ATID-392 A record of being continuously raped by my boyfriend's childhood friend who was as close to me as a sibling. Natsume Saion

It's been seven years since Saiharu dated her current boyfriend. Ever since she started dating, her boyfriend's best friend, Yuta, was always by her side. At some point, it became the norm for the three of us to be together. Saiharu unconsciously shows her defenseless appearance in front of Yuta, which she only shows to her boyfriend. However, for seven years, it was too cruel a stimulus for Yuta, who had been secretly thinking about Saiharu.