KILL ALL KAIJU
B72/100Web serial by HeroGuy
Earth is lost. Driven to the brink of extinction by impossibly powerful Kaiju, humanity survives only in Subterranean Arks deep in the Earth's mantle. Raymond Ryker isn't a hero. He's simply the best surviving pilot humanity has ever known — and he fights not for glory, but to avenge the countless lives lost to the monsters. When a mad plan is concocted to send a human consciousness back in time to inhabit their younger self, Ryker volunteers. But the experiment goes wrong: instead of his teenage body, Ryker's mind is transplanted into a newly hatched Kaiju. Trapped in the body of a monster and unable to warn humanity of the coming cataclysm, he must forge his new form into the ultimate weapon. The mission hasn't changed. Kill all Kaiju.