The beautiful girl "Nazuna" who looked at the world with cold eyes. Why do men desperately shake their hips, aren't they stupid... she looked down on them. She was absolutely insensitive. But that was already in the past. The door of pleasure awakens as she is touched by the uncle. The hell of climaxing over and over again. Despite being afraid of the pleasure she feels for the first time, she can't stop the climax. Giving in to the uncle and accepting the internal ejaculation.