[Help] Looking for a title

The main character gets into an altercation with a noble kid on th way to an academy and comes back later and gets rid of him.

The knight/guard of that family is like where the hell did he go? The only issue was with mc it had to be him and gets tunnel vision trying to prove it's him with no evidence, ends up getting himself in trouble.

That's all I got, pretty generic so trying to find it has proven difficult.