Invincibility starts from drawing a sword

The demon emperor is in the world, and the demons are rampant.
Xia Nan, who had been struggling for more than half a year, finally pulled out his knife.
Basic swordsmanship +1, upgraded to sword drawing, ordinary monsters can be killed with one sword.
Sword Drawing +1, upgraded to Berserk Slash, the Great Demon King slaughtered at will, and blood stained the world.
Berserk Slash +1, upgraded to a ferocious Heavenly Sword, the Heavenly Demon Realm exploded, and the killing value reached its peak...
Fierce Heavenly Sword +1, upgraded to World Destruction Crazy Sword, hundreds of millions of demons were annihilated, and even nine days were pierced...
But it all seems to be just beginning.
The future is like ink, and the road ahead is like blood.
Xia Nan has always believed that on the way forward, there is nothing that cannot be solved by drawing a knife.
If one strike is not enough, then two strikes.
……
He looked at the boundless calamity in front of him, and slowly pulled out the knife...
The sword is drawn, and the light of the sword shines through the ages.

Key words of the novel: Invincible begins with drawing a knife, no pop-up window, invincible begins with drawing a knife