I Became the Great Demon King to Spoil My Little Sister

Poor and destitute, Li Mu scrapes by with his younger sister. Little does he know that twelve divine gates will suddenly descend upon Earth. When the era of the All-People System arrives, he expects life to become even harder, but instead, he unexpectedly becomes the master of the System!

The era of the All-People System! I am the Great Demon King!

The female emperor of a fantasy world? Ding! Mission issued! Mission complete! Claim your reward! Reward: a game console! Tetris suppresses everyone with holy might!

Female Emperor: “The System is so powerful! The System is the best! Give me more missions!”

Driven into a corner by a villain? Time to issue a mission.

Ding! Mission requirement: Be defeated by Li Mu!

Ding! Reward: “Cleverly Fried Golden Pumpkin Seeds!”

From then on, the villains embark on a one-way road of trash talk and empty boasting...