Berserk of Gluttony

In this world, there are two types of people. Those Who have powerful "skills", and those who don't. People born with powerful skills, exterminate monsters to level up and become successful, while people without them, become failures,who are treated harshly by society. Follow the story of Fate, a guy who works as a gatekeeper, and whose only skill is gluttony, a skill that only makes him hungry. (Whimsubs)