An An is a student in No. 1 Middle School.
At the beginning of her sophomore year in high school, she was "hit on" while running on the street after her evening self-study class.
"Hello, my name is Bai Leran. I am a sophomore in high school. Who are you?"
The other person didn't have a school uniform, and his slightly curly hair looked like he had been permed, so he was definitely a fellow traveler.
"Ange."
Just after the two of them ran around peacefully for half a semester, a "bad boy" who called himself Bai Lelan, a sophomore in high school, stood on the podium of An'an's classroom.
Bai Leran: "Hello everyone! Since your physics teacher is going to have a baby, I will teach you physics in this half semester."
An An:???
Physics teacher who is gentle on the outside but scum on the inside × delinquent girl who is rebellious on the outside but fragile on the inside