[Kito Sakeru] Education Zenpen Part 1 (Houkago Nioism)

A shy boy is forced by a group of eager female students to strip and masturbate in a classroom, their hands gripping his small, hairy penis while he protests. The tension escalates as they taunt him about his innocence and his sister's presence, culminating in a humiliating encounter that blends defloration with rough, non-consensual acts. The story ends with the boy apologizing and the teacher announcing a temporary leave, hinting at further conflict.