Koyuki is known for drawing erotic manga and usually creates her works by referencing adult videos while incorporating her own fantasies and desires. However, realizing she is still a virgin, she decides to take part in a project to lose her virginity through an AV experience. Although she expresses her sexuality through drawing pornographic comics, during the actual AV shoot, she feels shy about being naked and spreading her legs in a wide M-shaped pose. She is so nervous that when faced with a real penis, she carefully wipes it down with a wet wipe. During her first sexual experience, her confusion and tension gradually give way as her body begins to open up, allowing her to discover new sensations.