During the day, she fulfills her duties as a teacher, and after school, she secretly meets with her students. Reiko enjoyed immoral acts unbecoming of a teacher. But recently, her students started demanding a relationship within the school grounds, seeking further stimulation. Reiko warns them that it's too dangerous. But the hot-blooded young people won't listen... Dangerous school affair where everything will end if they're seen. Reiko, while rejecting it, was feeling the thrill and sense of immorality.