It's been six months since Rion and Mamoru accepted everything. His long-held dream of "spending the rest of his life with the one he loves" has come true, and he is savoring the peak of happiness. He also gradually becomes more comfortable with Mamoru's son, Eiichi, who was a little awkward at first when they started living together, and he thought that the family bond was deepening smoothly... But one day, while Rion was indulging in masturbation in his room, he felt someone's gaze coming from the gap in the door. When he turned in that direction, he saw Eiichi standing there with a surprised look on his face.