Gang-raped female teacher

Haruna Hana is a serious female teacher who has been newly assigned to Boys' High School. She had a painful past of being gang-raped by multiple students. As I got used to school, cruel games using a certain site became popular on campus. Haruna, who has become a target, is attacked by a male student who has turned into a brutality, and becomes prey to all sorts of acts of humiliation, with breasts being tortured, forced deep throating, rape filming, extreme gang rape...