A mysterious old man offered a '100 Million Year Button' to a failed swordsman at a swordsmanship academy. This magical button, when pressed, grants the same effect as 100 million years of training. The failed swordsman, half-skeptical, pressed the button and immediately felt immense power within him. He pressed it multiple times, only to realize it was a cursed button that trapped him in a 'prison of time' for 100 million years. After countless years of training and contemplation, he finally returned to the real world, but with only his refined sword skills remaining. Believing that pressing the button made him strong, he repeatedly pressed it, cursing his foolishness each time. Eventually, he realized that by 'slashing' the world, he could escape. This is the story of how the failed swordsman cleared his name with ultimate sword skills and made his name known in the world.