HUNTB-088 "I'll gently jerk you off like this!" "Is it good? Are you about to cum?" "No, don't!" A serious study session turns into a dick study session!

A serious study session turned into a perverted dick study session! But it's all my fault! The weak-willed me, before tests, always holds study sessions with the girls in my class at my room and teaches them. However, since their skirts are short and they're always careless, I can see up their skirts non-stop! Seeing that, I can't concentrate on studying and end up getting a boner... I hurriedly hide it but get caught, thinking I'd be disgusting to them, only to find the girls super interested in my erect dick. Thus begins the dick study session.