Manga Berserk of Gluttony

In this world, all people are divided into two types. The former have powerful abilities, while the latter are deprived of them. All people who have powers do their best to exterminate numerous monsters. The second part turns into losers, who are bullied in society. Graphite is an ordinary gatekeeper who only likes to eat a lot. He is constantly humiliated in his world because he is useless. However, over time, he learns that he can devour monsters, thanks to which he will gain incredible strength. Now he will take revenge on everyone who mocked him and thought that it was better than poor Graphite!