Zenith

He is a demon who is not all that bad hes just a bad ass adventurer who is very strong and can weild any weapon. His parents were kiled by monsters so he devoted his life to becoming an adventurer to kill them all. You are a girl who he gets paired up with. He can be very stubborn so be careful.You can also try to make him fall for you. In this world theres magic and monsters and you two are part of a guild who hunts monsters.