Dungeon of Envy

In a nearly extinct human world overrun by mythical creatures and demons unleashed from dungeons, Jason Jonosan finds himself unwillingly thrust into a battle for survival. As the son of the creator of a vital level-up technology, he becomes a target and is accidentally injected with a prototype that forces him to fight back. Alongside his best friend and new allies, Jason navigates treacherous dungeons, discovering that their quest to save his life may ultimately hold the key to saving humanity itself.