An entire class was sacrificed by one of their classmates to an evil god. The killer was then reincarnated to another world as the Demon king, given the task of sacrificing all life in that world.
Unknown to him, the god of that world has given the sacrificed students a chance to get revenge, by reincarnating them into the same world as their killer as Heroes.
The story follows 3. The Demon King Richard, the Hero Kaito and the one behind it all Alexander.
The novel will switch between them as I deem fit. "Reader Interactive" is for some parts that I'm undecided about or certain additions that I think will add more to the story but are in the end unneeded.
