Godzilla's Path of the Old Gods
Ancient sea creatures have mutated and acquired an atomic furnace similar to a reactor, which can be said to be the closest to the existence of gods.
But, after all, this is only close. What it possesses, the ability to evolve almost infinitely, cannot reach true infinity.
And this last flaw was made up for by a soul from another world. All of this starts with the day when an ugly-looking sea creature with dead fish eyes came ashore.