When we meet in this life, we are destined to catch you...
You are a demon, a proud and indulgent demon, but I, a person from another world, don't want to just watch you from a distance. I met you, became your supporter, and will always be by your side from now on.
"Yu, it's getting cold, let this temple collapse! Let the gods tremble!"
"Yes, my Lord."
"Yu, this little snake is pretty good, I'll give it to you to play with!"
"..."
"Yu, what's wrong?"
"Demon Lord, this little... Snake is... Seven stories tall!"
"Oh! Do you like it?"
"..."
"Yu, stand next to me, I want to see you..."
"... Okay!"
This is actually a story about a human (?) Killer and a serious (?) Demon who rebel against society...