[Anyakunin] Kagai Jugyou (Futa-On-Male)

A scholarship-dependent male student is blackmailed by his voluptuous, long-haired teacher into crossdressing and sneaking into the girls' building for an extracurricular lesson in the science classroom, with his funding held hostage if he refuses. His small, sensitive uncut cock with partial phimosis becomes a hands-on teaching aid as the sadistic futanari instructor invites a circle of eager schoolgirls to touch, tease and examine him up close. What starts as humiliating exposure escalates into a relentless group demonstration of blowjobs, penetrative sex and messy orgy play, with the teacher's thick, veiny shaft taking center stage to feminize and break the reluctant trap for everyone's pleasure.