A work with the concept of teaching the pleasures of sex to a girl with zero romantic experience. Last time, Tsumugi-chan was thoroughly taught about sex. She has no boyfriend and no romantic experience. But the pleasure of sex seems to be gradually etched into her body. She still needs a bit more development to know true pleasure, so today I called Tsumugi-chan again and gave her a lesson in sex. I carefully held a girl who knows neither how to nurture love with the opposite sex nor the pleasure of sex. I think no further explanation is necessary. If you want to enjoy the "real" reactions and vivid expressions of a girl in the midst of development, please observe the main feature.