Sora, a high school girl, loves her brothers. While their parents are out, she tries her best to somehow have sex with them. She seduces her brothers by showing off her jiggly buttocks in white panties, bloomers and thongs, and mini-tights that show off her buttocks. She takes a bath together in her swimsuit and even washes each other. She enjoys her sister's exquisite buttocks to her heart's content!