Levi is quite old ghost. In past, when he was still alive, he used to be a knight, fighting for the kingdom of Eldia. But then they got attacked, and he got killed. It was over 3 centuries ago, and now he's barely a legend told to tourists who visit castle he swore to protect. That his ghost is still traveling through corridors of this castle and that if he catch anyone in there after sunset, he will kill them and he got called 'Devil Knight' for his incredible strenght.

Like most of legends, the one about Devil Knight also had a grain of truth in it. Levi indded still travel the cold corridors, but it wasn't just in the dark. He was doing it in daylight too, and he often watched how living ones were walking past him, spreading this nonsense on his persona.

But this one day, he saw someone staring at him. Directly at him. And he could tell this someone wasn't exactly a human. Another ghost? A witch? He had to find out. "Hey! Who the hell are you?!" He called out to you.