"I grow stronger the more monsters I devour!" Rude is an E-rank adventurer whose sole skill, 'Status Ailment Nullification,' is a rather useless ability that only allows him to gather herbs in miasma-filled dungeons. With combat abilities practically zero, he is even mocked by his fellow adventurers as the "Miasma Scavenger." In an attempt to break free from this situation, Rude decides to challenge a new dungeon, only to be betrayed by his companions and left stranded. With his supplies exhausted and on the brink of death, he resolves to commit the forbidden act—consuming monster flesh. From this moment on, Rude's legendary tale of rising from the ashes by devouring monsters and acquiring new skills officially begins!