Become a Villain Starting from the Underground King

I turned out to be a villain? ! -Underground King It even has the ability to devour... Only the strong can survive, and the weak will become my nourishment! Devour, evolve! "Swallow the Deep Sea King and gain the divine power of the ocean!" "Swallow the Sky King, all three series of abilities are in my hands!" "Ding! Do you want to see the protagonist push a tornado? Ahem, then do it!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.