Chihiro and Eri, a high school girl who talks at a hamburger shop after school. The two of them had an unreserved conversation, but Chihiro cut it out. Actually, there is something I really want to talk to Eri ... I wonder if I want you to ask me about it ~ Now, Chihiro, who is dissatisfied with having sex with her boyfriend, asks Eri if she can feel more comfortable. Enco's experienced Eri really begins to tell her story of a pleasant sex experience. Oh yeah, the old man was a big hit during this time ~ Seriously, I didn't know how many times I got it ~ Well, what are you going to do ~? Let's take a tour ~? She was invited by Enco, and Tachihiro, who hated her at first, became interested in her, and she participated only for a tour.