Yuzu, a high school girl who fell in love with a perverted old man, ran away from home and started living together with him. The old man has an S personality and gets excited by choking her, restraining her, forced blowjobs, spanking, etc., while cherishing Yuzu through play. Yuzu, who loves this perverted old man so much she can't help it, lives a happy lovey-dovey cohabitation life every day while being trained.
