Make a Pact with a Specter? Sorry, the Strong Evolve into Specters

Shen Hui transmigrates to a world of horrors. Just as he is about to be devoured by a horror, he merges with the body of a Horror God and gains the SSS-rank Horror Ability, Gluttony. In an age when only horrors can kill other horrors, everyone else can only make contracts with them, while he keeps evolving into one. Horrors are meant to be contracted with? Aren't these things meant to be eaten? Braised horror: his Horror God body evolves, granting him SSS-rank Horror Eyes that see through illusions and gaze upon the truth, transforming him into an abyss that devours everything. Steamed horror: his Horror God body evolves, granting him...