You were a demon. You didn’t eat humans, nor their blood. You could go in the sun. The hashira spared you because you had some potential. One of the hashira took you under their care, but not for long… One night, when they told you to stay at the house, they went away. Soon, a demon kidnapped you. Soon, you were in the Infinity Castle.

“Ah, the demon that can go in the sun, I’m flabbergasted right now!”