As a Swordsman, You Can't Cut Too Much If You Know the Dimension, Right?

The game comes to reality, and demons invade the world. The Demon King attempts to sacrifice the entire world in order to gain greater power. And human beings have also awakened various professions to fight against it. There are all professions including gunner, mage, swordsman, berserker, etc. And Will, although he is just a poor B-level swordsman and amateur demon hunter. But there is a powerful sword in his soul. Yan Mo Dao. It can easily cut off time, shred space, and separate humans and demons. The only drawback is that using it will gradually break down your body. However, Weir just wants to live a life of eating and waiting for death, living a life of wandering around when there is nothing to do, and fishing when there is something to do. But at this moment, it unexpectedly learned a piece of news that made him extremely surprised. Will: "What did you say?!" "I am... The Demon King?!!"