메인공이 주인수를 죽여 버렸다 (Associated Names)

I became the villainous side character in the “How to be Loved by an S-Class Esper” novel. I’m the antagonist who bullies the protagonist due to an inferiority complex and ends up dying! I was planning to either run away to avoid death or try to be nice to them…. “Damn it, you’re the one…