It's been half a year since I've been with Mamoru, who accepted everything. Rion is at the climax of happiness as his old dream of "getting married to the person he loves..." comes true. And I thought that I was able to gradually open up to Mamoru's son, Eiichi, who was awkward when I first started living together, and that I was steadily deepening my family ties. One day, when Rion is indulging in masturbation in his room, he feels someone's gaze through the gap in the door. When I turned around in that direction, I saw Eiichi standing there with a surprised expression.