"The resisting woman becomes lewd after being left with a vibrator laced with aphrodisiac, repeatedly reaching orgasm by grinding herself on a real cock!" Aiya, who is kind and pure to everyone, was about to marry her boyfriend she lives with. One day, an underling of her boyfriend, harboring a grudge, attacks her, forcibly inserting an aphrodisiac-laced vibrator and leaving her restrained. Unable to move or escape, she can't even call for help due to shame and endures it. However, little by little, her body is overwhelmed by the pleasure from the aphrodisiac and vibrator, causing her to lose her sanity...
