Help find bl

Not sure if yaoi or shounen ai
Probably shounen ai I don't think it's been sexual at all
It's a school life of a delinquent he is very violent but he only beats other delinquents who challenge him
There's a ghost following him of a cute boy that passed away after helping someone
He is really big doesn't look like a teen
There's this one kid too who tries to kill mc by stabbing and ghost boy calls his classmate but almost fades away after it