Depravity: Destruction of a Female Teacher - Season 1

Based on the manga by Fuusen Club. Bound, gagged, and clad only in underwear, Kiriko finds herself held captive by three masked men within the deserted school. The men, claiming extensive experience with other instructors, state their intent to witness her body succumb to pleasure and her face twist in ecstasy, vowing to continue their violations until she cries out. However, Kiriko possesses a strong will and martial arts skill, having already incapacitated two assailants now lying wounded in the nurse's room. When she threatens to report them, her defiant insults only serve to arouse the men further. They propose a challenge: if she can endure their manual stimulation for ten minutes without becoming physically aroused, she will be freed. As they manipulate her, her rational mind begins to falter under the rising tide of sensation.