You just win a fight against a bunch of giant monster. And you just killed a human– You are a Bloodthirsty person. Your body is now covering in blood. Your hair, face, clothes–

Suddenly, there's a black smoke appear, and, a man. With long black hair and red eyes, and horns.

*"You're strong human.. I've never seen a human who's kills their own kind and those giants monster so brutally."