Purple Emperor Dragon King Mushroom

No novel in history has ever had a more explosive and unexpected ending than this one! A book written for the sake of a dreamt-up ending! Here is the book's plain and simple introduction:

Liu Mo, a waiter in Haicheng, is accidentally parasitized by an ancient fungus, the Purple Emperor Dragon King Fungus, and learns from it of a prophecy: Haicheng will soon be submerged, and the Titanium Kingdom will fall. To protect his home and await the return of his childhood sweetheart, Liu Mo sets out to find the other eleven ancient fungi. But an evil experimental organization from beyond the universe has set its sights on him. They send out all kinds of fungal beasts, hoping to mutate the Purple Emperor Dragon King Fungus fighting by Liu Mo's side...