The protagonist is a trainee teacher who commutes to a certain girls' school.
Safely finishing the daily practice period, and becoming a regular teacher is his goal.
However, his mind begins to tire.

Uneasiness and nightmares come in sudden attacks, causing a strain, a social phobia, begins to grow more and more every day.
Slowly a fear of the girls he meets with after school begins to emerge, yet at the same time, a desire and passion.
Disgust, a kind of taboo, such a feeling is directed to the adult women who are his colleagues.

"Am I really fit to be a teacher?"

Day by day, the pressure builds.

Even when the lessons are over, the lights are off, and the school is closed for another night.
He cannot help but wander.