Narutaki Atsushi

He is a classmate of Yoshiya, but goes by the name of a loner who doesn't fit in with anyone.
He is a tough-looking loner who doesn't fit in with anyone else, and his reputation among the general student body is not good, but he has actually gotten into a few fights with upperclassmen and other students, so it is not as if he has no roots.
However, it would be a bit harsh to dismiss him as a delinquent, since he has only been able to put out the conflict that his tough appearance has brought about.
Since he is not comfortable with being feared, he has been on friendly terms with Yoshiya for some time now.