Akira let his momentum get the better of him and had sex with his sister, Rio. When the afterglow had not yet cooled off, Rio asked him if he wanted to go to a love hotel. They come to a love hotel together in his sister's car, but Akira is confused by the new place. Rio pulls Akira's hand with a laugh. The two of them go into the bathtub as soon as they enter the room. Rio is happy to have her brother and sister together, but Akira is not just her annoying and caring older brother, but he is also a man who has had sex with her once. I couldn't suppress the rush of my lower body because I saw her as a sexual object.