Shinwa Densetsu no Eiyuu no Isekaitan - Volume 9, Chapter 1 – Before The Storm, Part 4

This is the story of a crazy lich who possesses an internal game system and brings catastrophe to the entire world.

“Let’s look at the daily quests today… it’s the damned choose one-of-two-options-type again. Destroy a town with a population of 30,000 people or above; reward: 10,000 evil points. Steal lollipops from 3 children; reward: 1 evil point. If neither of the quests is completed, then 2 points will be deducted.”

“Tsk! You think I’m stupid? If I really destroyed a town, a crusade of Epic-ranked Holy Knights would definitely come hunting me down. Even if I earned the points, there wouldn’t be any life left in me to spend them. I better just go be a kindly lollipop bandit.”

I’ve already had enough of being a notorious lich. Who says that a lich can’t be a good person? I’m definitely going to beat this damned system and be an upright and dignified good man.

- Description from novelupdates

Ye Xiao was a superior cultivator in his previous life. The three factions of the realm kill millions of people every time they attempt to seize cultivation resources. Wealthy towns turn to wastelands in just a single night. They cover up their crime with an assertion that the towns were suffering from pestilence and disasters.

They forcibly hold all the resources for cultivation, monopolize all valuable practice materials, and keep outsiders from cultivating so that only their three factions could cultivate in the realm. Ye Xiao declared war against the three factions in retaliation for their actions. He fought alone and ended up dying in vain. However, he is reborn into the mortal body of a 16-year-old boy. He will use the powers he cultivated in his last life and slaughter his way back into the Realm. The story begins!

- Description from Novelupdates

After the Catastrophe, every rule in the world was rewritten.