My beast can't be a demon.

Beast Tamer, but the spirit pet is a grass.
[Ding! Congratulations to the host for awakening the world-saving system. ]
[Our ultimate goal is to kill the beastmaster named Zhou Lu in the cradle and save the whole world. ]
Zhou Lu: “???”
[The spirit beast he cultivated will become a demon god that destroys the world, and the creatures in the world will wail under its vines. Please do everything you can to stop him. ]
Zhou Lu looked at the grass fighting with the bee.
Weak, pitiful and helpless.
You call this a demon god?
This book is also known as "Beast Tamer Starts from Grass".