What Am I? (Fantasy Harem X Male Reader)

In a world full of magic, there lives a teenager named Y/n a boy who has Superhuman abilities, like strength, speed, stamina, and agility. In the world it would be extremely rare to possess those abilities, but for some reason he can't use any sort of magic. Except one, Shadow. He doesn't know how why he can only use that magic, but even though he excels in everything else. He's looked over, which put him in a bad, abusive childhood, while the only person he can trust is his best friend, due the his mother's mysterious disappearance. Now he wants to find his father to search for the answers he's looking for.