Mei, the most popular beautiful swimming instructor at the gym, is temporarily assigned to teach a class for middle-aged men. Her lack of enthusiasm and careless instruction leads to a fabricated accusation of sexual harassment... The students are enraged by Mei's attitude, and they carry out a gang rape of her in revenge. "W-What are you doing!?" she asks, half-crying as she's surrounded by numerous penises. They force their penises into her small mouth. She gags, but the deep throating continues. They dress her in a sexy competitive swimsuit that's even sexier than being naked, and the pride and pussy of this arrogant big-breasted woman are destroyed. They penetrate her one after another and cum inside her in revenge. They pour a generous amount of thick semen over her. After she's raped with an unstoppable lust to make her understand her position, she ends up shaking her hips of her own accord (lol). It's not good to look down on others, teacher...