His wife Misato, who had gone out to practice for the company bowling tournament, came home with her colleague Yuka. Misato's husband Hidekazu, who was just lounging around on his day off, froze at first sight of Yuka. "What a beautiful woman..." Hidekazu's lewd fantasies about Yuka began to grow. Just thinking about the beautiful and well-built Yuka sleeping in the room next to his, under the same roof, made him unable to suppress his gushing sexual urges...