Perfect World: Reborn as a Bird, Killing to Prove Emperor

Traveling through the perfect world and being reborn as a bird, Lu Ming could only choose to build a small nest on the Willow God to seek protection from the God of Willow when faced with the terrifying beasts like gods and demons in the wilderness. Lu Ming originally thought that he would survive like this, but unexpectedly, he suddenly awakened to the enemy-killing upgrade system. You can gain experience points to upgrade by killing enemies, and you can also get system rewards for each upgrade. In this way, Lu Ming relied on the system to rise from the lower world, directly to the immortal world, and became the supreme immortal emperor.