"Shimada-kun is different from the other kids and is a very serious and wonderful person." I, the class representative, admired Maki-sensei, the student guidance teacher who would say these words to me. She was stricter than anyone else when it came to breaking school rules, but praised the right things, and she truly was the kind of woman who deserved the description of good behavior. However, one day after school, I got a glimpse of Maki-sensei's true face. That rule-abiding Maki-sensei was teaching class without any underwear...