Mahiro Tadai, a tomboyish teacher who always wears a tracksuit and scolds the stupid male students. The students laughed at her behind her back, saying "She definitely doesn't have a boyfriend," "Rather, she's a virgin," and "She's completely missed her chance to marry." However, her true nature was that she had an exceptionally strong libido, and she was a super pervert who indulged in exhibitionism and masturbation during class or when no one was around after school, remembering her instincts as a female. The content may vary depending on the distribution method.