Nagano Tsukasa is a physical education teacher who is extremely popular with female students. On this day, she is confessed to by female student Sawamura Yuka. Tsukasa tells her she can't answer her feelings, but Tsukasa has secretly developed a crush on Sawamura. One day, Sawamura Yuka is attacked by delinquent male students. At that time, he was forced to take his first time by someone else, and he was trampled on his precious feelings towards Tsukasa, and took his own life. Physical education teacher Tsukasa wears Sawamura's memento bloomers, and becomes a super blue bloomer, vows to take revenge on the delinquent students who have driven her to death... [BAD END]
