Hound Of Gremory

Rias Gremory, desperately in need of a helping hand to save her future summons a legendary hero from human mythology. Some call him The Child Of Light. Others call him The Hound Of Chulainn. His teacher calls him a pain in the ass boy who doesn't have any manners and should stop calling her old. Everyone else knows him as the goodest of boys, Cu Chulainn.