Maou App de S-kyuu Hunter ni Naremashita

A boy lives in a world with dungeons and ranks as a hunter with the lowest aptitude of "F," indicating minimal ability. Betrayed by his companions in a dungeon, he is abandoned to be devoured by demons. As he faces death, he expresses frustration over the limitations of talent and his desire for power. He then hears a voice from "the world," acknowledging his longing for strength. An application called "Demon Lord" activates within him, granting abilities to overcome the barriers imposed by his low talent. Using this power, he begins to grow rapidly and challenges the system that once oppressed him.