"Mio's" son had been bullied at school for some time, and upon learning this, she relentlessly pursued his homeroom teacher, "Kubota." Around that time, a package arrived from Kubota's hometown, containing old adult magazines. While casually flipping through them, he accidentally discovered her featured as the No.1 Soapland girl. Shocked and harboring resentment towards her, the teacher decided to use this information to blackmail her...
