His mother, Shizuka, remarried Genji, and Susumu had a stepfather around his age. - Genji did not think well of Susumu's existence, and the family was strained. - Even during meals, Susumu is forced to endure Genji's sarcasm, and the only thing that saves him is Shizuka's presence. - Susumu and Shizuka had a deeper relationship than before... - However, with Genji's arrival, Susumu can no longer indulge his mother confidently, and his desire has increased, and while pretending to be calm, he begins to seek out his mother's body under the kotatsu surrounded by the three of them. - .