With a Sword, You Are Invincible

No matter how powerful you are, I will kill you with just one blow. The road to hegemony is either your death or my death. As long as I'm fast enough, there's nothing I can't kill. When my sword is unsheathed, it will be the day your soul returns to the underworld. What is a god and what is a demon, they are all ants under my sword. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.