hi guys does anyone know this yaoi where the mc is a black haired boy and he finds this bp...

hi guys does anyone know this yaoi where the mc is a black haired boy and he finds this bpind lomg hair boy when he was young and then they both move around to fight with spirits (?) the author also made another manga in which it had angels maybe and they had an academy where they were assigned with missions idk but I'm looking for the first yaoi pls help