The Paradoxical Dungeon

Adam was waiting in the endless void that is the afterlife after being kills by a random street mugger. While he is in the void he is offered another chance at life. To get summoned to another world as a hero. Without any hesitation, he accepts this new life. Only to find out that the mugger that killed him is also chosen to be a hero. To make matters worse for him, too many people were selected to be heroes and it ends up being him that is selected to be returned to the void. But right as he is being sent back he makes a deal with a strange entity to be reincarnated on its terms. After hastily excepting, he starts his new life as a dungeon with a few interesting quirks and unimaginable potential This story is 15+ just to be safe Queue(15)