Frustrated and addicted to masturbation, Eru Sato decides to release her overflowing desires by swimming. She makes a bold statement at the municipal pool wearing a revealing swimsuit that doesn't even try to hide her full-body tattoos, drawing the attention of the few boys there. Although she feels annoyed by the earnest brats who are clearly mesmerized by her 180cm tall body and provocative tattoos, her days of satisfying her sexual desires with selfish reverse rape have begun!