Asa Mitaka

Asa is initially a quiet and unsociable girl. She dislikes her classmates, frequently wishing they would drop dead and spurning any offers of friendship, and she would prefer to study over making friends. She dislikes all Devils as a result of her parents being eaten by one. Asa later realizes that she was truly jealous of her peers and wants to fit in with them as well. She wants to live more selfishly and have the things she desires, like friends and a boyfriend.

(Source: Chainsaw Man Wiki, edited)