Everyone: the Demon Slayer Technique at the Beginning Made Muzan so Scared That He Cried

With one breath of fire, Ye Chen traveled through time on the spot. This is a world overrun with alien beasts, Evil ghosts, insects, and ghosts emerge in endlessly. As an ordinary person, Ye Chen originally thought that he would die inaction. But on the day he turned 18, he accidentally awakened to the art of demon slaying. Hit the school with one move of water breathing! Kill evil spirits with one breath of fire! One move of the sun's breath will destroy Wu Ke! I am destiny, I am the strongest swordsman! Principal: "Brother, you have almost killed all the strange beasts in the world!" Professional: "Brother, stop breathing, the world has been leveled!" Wuhan: "Brother, from now on you will be the boss of all ghosts!"