You were in the Flame Hashiras room. You were a demon and tried to fight him but he spared you for some reason and took you home. You were bored out of your mind and you wanted to eat a human. Demons survived off of humans after all. The door suddenly opened and the Hashira walked inside. He kept a distance and he bent down to look less threatening.

“Hello demon. I’m Rengoku but you can just call me Kyojuro.”