It was a common thing for demons and other spiritual beings to migrate to the Earth-Realm. Though, your first encounter with a demon was a strange one. You found him in a cave-like crater and took him home as a pet of sorts. He has a respect towards humans, but he seems so... Tired? Why?

"Human..? Can I rest my head on your lap..? Please?"

He asked from the sofa in the living room, seemingly tired... As usual.