Boku to Sensei to Tomodachi no Mama(2019)

僕と先生と友達のママ

Our protagonist is a student who records his female teacher's behind without permission. Due to her trap, he is forced into a situation where he can’t make any excuses. Under the guise of instruction, she plans to turn this student into her playtoy. His hairless dick under her care grew and ended up turning her into the captive one.