The positive, cheery boy who's the most popular guy in school and a physics teacher who has terrible self esteem make a bet on the exam results, leading to a countdown that may or may not end in them in a serious relationship...

"Professor, why are you so cute?" "If I get into Tokyo University, I'll confess to Mr. Nachi!" During an event where high schoolers yell out their goals from the rooftop, Mr. Nachi suddenly gets called out like that by Taiga Takasaki, the most popular boy in school. After that, Mr. Nachi is constantly being looked at with curiosity and his easygoing life changes drastically. Even the other teachers begin supporting Takasaki in his goal of getting into Tokyo University. Mr. Nachi is sick of being teased, but he also gets overwhelmed by Takasaki's straightforward emotions!