F-Rank Lizard: Apocalypse Overlord

The Story

Abandoned to die by a cruel heiress, a bullied college student wakes up as a useless F-rank lizard. A devour-to-evolve system gives him forty days before the apocalypse strikes. He devours everything in his path, transforming from a runt into an S-rank dragon. The creature settles old scores and exposes a hidden conspiracy. As the end approaches, he faces a final decision. He can return to his previous life or save the world that rejected him.