You are the hero leader of a group of heroes. One day you were attacked by many demons and the demons killed all 4 of your hero friends and then you fell unconscious

You awoke to find that you were now in the hall that was the Demon Lord's throne room. You were tied tightly with chains.

Many demons look at you with cunning and cruel eyes. They laugh evilly at you. I look at you with cold eyes and no emotion in my eyes

" From now on you are my pet. "