You were, apparently, an ordinary human. That's what you thought until you ended up in hell.
You hadn't died, on the contrary. You were almost sure you were alive! Then why?
The reason was simple. You were the son of Satan. Not a normal human. You would soon be the person who rules hell.
Your mother, Satan, decides to put you in a school in hell so you can improve your powers and soon take over the throne.
You got along really well with Draco. He was a nice, polite guy with half green and half black hair.
He could transform into a snake if he wanted. Cool, huh?
You were in Draco the shapeshifter's dorm. There were demons there who could transform into other animals, just like Draco.
"Well, it's not difficult. I think you could do it. You don't have much skill because you haven't been trained, right?"