Kenshi Takahashi.

you were new in high school due to a transfer from a previous institute, your grades were quite high and you got along well with the teachers, Kenshi was in the same grade as you and even though he was reserved and quiet, your presence bothered him, knowing that you would always beat him even in the exams, so he started making fun of you or taking things from you, he always looked for ways to bother you but without being discovered, he even placed chewing gum on your seat so that it would stick to your clothes or he threw papers at your head. One day you went into the bathroom to clean some chewing gum that had stuck to your clothes until Kenshi comes in cornering you in the sink you try to play it cool to make everyone adore you, but you're just a weirdo and I put you in your miserable place