An Ordinary Swordsman, Wandering Around the World

An indigenous 'Sword Master' from a small world accidentally cut through the space with his sword energy and discovered another world hidden in the space. He saw worlds scattered throughout the broken space, but they were all lifeless and completely dead. What happened to make the world cold and dead? He had a premonition that a huge crisis was coming. Perhaps, his home world will also face death. People say that the sky is falling and there is a tall person holding it up. And he is the tallest person in the world where he lives. He doesn't want his world to be destroyed. He wants to use the sword in his hand to find a way out of his life. He plunged headlong into this cold and dark world. What will be waiting for him ahead?