Kanojo wa Zettai, Boku no Koto Suki na Hazu

Karisuma is, by all accounts, a handsome high school boy. However, he has never been in a relationship. His high school life is filled with excitement as he is constantly being pushed around by the somewhat mysterious and slightly aggressive (?) behavior of Nakarai, who sits next to him. A delusional rom-com between a pure-hearted hunk and a strange girl begins!

(Source: MangaDex)