The Apocalypse: I Am a Zombie

A college student was accidentally infected and became an intelligent zombie. To regain his human form, he kept evolving, and it turned out he could even control his own evolution. Level One Zombie, Level Two Zombie... Level Seven Zombie! The zombies kept evolving. What? A Level Seven Zombie had intelligence no inferior to that of a human? What, you were the ones who spread the zombie virus? Because humanity was evolving too slowly!!! So it had all been a conspiracy! Their ancestors had been forced back to their lair by their enemies. To reclaim victory, they had not hesitated to sacrifice their descendants, infecting them with the virus to produce enough powerful warriors!