Nariyuki → Papakatsu GIRLS!! THE ANIMATION

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Based on the erotic game by Courreges Ace. Two high school girls, Chihiro and Eri, were chatting at a hamburger shop after school. As they were talking, Chihiro slowly changed the topic. "Actually, I want to ask you something... no, I want you to listen to my troubles~" Chihiro told Eri that sex with her boyfriend is no good, and asked if there is a way to make it better. The experienced prostitute Eri then started talking about her sex experiences and how good it is. "Right, the customer I had last time was a huge jackpot~! I can't even remember how many times he made me cum~! So, would you like to go and watch us~?" At first, Chihiro refused the idea, but since she was definitely curious, she finally gave in and said she would just watch them. (Source: Official Site)