Mayuki has a bad habit when she is drunk, which is that she will go seduce anyone near her! When she wakes up, she completely forgets everything. Since she was a student, she has been notorious for this; every junior tries to avoid drinking with her. Mayuki's current boyfriend is also a result of one party at university, where she got drunk, took him home, and drained all his sperm. Although she has a boyfriend and has started working, Mayuki's bad habit has not disappeared. Every time she drinks, she loses control of herself. From the guy she first met at her best friend's wedding to the director and colleagues, everyone has been drained of their sperm and left exhausted both physically and mentally...