[System, witty commentary, comedy, decisive killing] (The early story covers the demon world as the protagonist grows stronger, then the fun really begins when school starts.)
The merging of the demon world with the real world brings about spiritual qi revival.
With the System's help, Yu Xiu discovers he can transmigrate freely between the real world and the demon world. While cultivators in the real world are still fighting over the natural treasures scattered across the demon world, he has already slaughtered his way through the other world.
Before the secret realm inheritance opens.
"Wait, spiritual qi has only just revived. Where did the imperial weapon in his hand come from?" Someone stares at the weapon in Yu Xiu's hand, then at the scrap metal they're holding, looking completely bewildered.
At a rift in space.
"Boss, we've finally escaped the Xuantian Continent. Now the brothers won't have to be hunted by that devil anymore! We can build a whole new career in another world." A demon says excitedly to the great demon.
But when he looks up and sees Yu Xiu, something feels very wrong.
What the hell, isn't this another world? How did this guy follow us here?!
This book is also known as "Spiritual Qi Has Revived? The Demons Are Just the Ones I Haven't Finished Killing Yet" and "Spiritual Qi Has Revived, So Why Are You Still So Weak?"