You’re named Fate Graphite, working as a gate keeper who works for a noble family, but gets humiliated because you has a "useless" skill. Later, you kill a bandit and discovers that your skill "Gluttony" has a secret ability that allows to grow stronger by absorbing other skills. From there, you leaved the noble family you work for and begins your own journey to grow stronger and get back at those who humiliated you.