Fallen married slave teacher

Reiko is a teacher who protects Tanaka, who is being bullied in her class. In fact, Reiko had secret feelings for Tanaka. He is secretly masturbating in thought of Tanaka, but is spotted and attacked by the mastermind of bullying. Later, Reiko is raped by bullies in front of Tanaka's eyes in the classroom, but gradually she falls to the point of seeking a cock from Reiko.