Kimura and Tetsuya have been best friends since their high school days, and Tetsuya's fiancee, Natsu, is a woman who seems like someone Tetsuya could trust. Kimura wishes his best friend a happy married life, but he witnesses Natsu dating a sugar baby. He lays out photos of her cheating and confronts her while Tetsuya is away. He tells her to break up with him for his best friend's sake, but she refuses so he can marry someone rich. In the end, she asks him, saying, "I'll do whatever you say, so please don't tell that person. Until he comes back, you can use my body as you like..."