Nanami, who lives alone with her father, is suddenly confronted by her stepbrother... That alone is already a terrible situation, but he also sees her secretly masturbating in high-end lingerie. She agrees to not tell him anything for one week while her parents are away on vacation, and in exchange, she will do as her stepbrother demands! No matter how much he scorns her and calls her disgusting, her body still responds to his touch through her lingerie... a thong digging into her beautiful ass! She climaxes repeatedly while glaring at her brother as he pounds her hard!