Contrary to her neat and clean appearance, Shizuku Hanai, a slender older sister who reveals her lascivious inner world with a smile that she can't sleep at night if she doesn't masturbate. - Men repeat deep throating targeting her mouth. Tears, drooling, hyperventilating, but never-ending piston movements. - The appearance of the hair and face being messy with ezuki juice and semen will ignite the cruelty of S boys.