In Ashen City, magical runes determine one's status and worth. Born without a rune, Karen is merely a blacksmith apprentice at the Anvil Workshop, where everyone bullies him. On the night he is falsely accused of stealing materials and publicly humiliated, he strikes his hundredth sword blow in the ruins, activating the Ten-Thousand Forgings Epiphany System. Through relentless repetition of basic movements, he achieves minor proficiency after a hundred repetitions, mastery after five hundred, and sudden enlightenment after a thousand. Attribute points can only enhance abilities he has personally trained. Relying not on innate talent or magical runes, but on the strength accumulated through every single sword strike, he hunts dungeon monsters at night, forges an anti-rune magic blade, and investigates artificial magical runes and the ancient secrets left behind by his master. From a worthless rune-less outcast trampled underfoot, he gradually rises to stand before the greatest magical rune prodigies.