A female teacher visits the home of a student who is a hikikomori due to truancy. To build the student's confidence, she allows physical contact, sucks on his adolescent penis, and tries to give him his first experience. However, unsure which hole to insert his virgin penis into, she mistakenly puts it in his anal hole. "That's not the right one," she says, but in her frenzy, she continues to piston, awakening to the pleasure of anal sex and decides to continue.
