Today, a girl wanders the streets searching for her comrade who was kidnapped by the Kuroshishi-kai and went missing. Her name is Nana Maeno. Just then, she receives information from her comrades… Nana heads to the location alone, but it turns out to be a trap set by the Kuroshishi-kai! Unaware that the place is their hideout, she drinks a beverage laced with aphrodisiac and is restrained, unable to move. She desperately endures the pleasure torture, but her body and mind begin to fall. Will Nana be able to endure the strongest pleasure training in history?
