Suterareta Yuusha no Eiyuutan - Story 1-2: "Only I Get No Cheats"

Humanity had finally ended the war with the Demon Race and sealed them away, forever.However, they now have to face the treat of the Shadow World, an equally dangerous threat to their civilisation under the rule of the Emperor!Facing only misfortune from a young age, Nikolaus Reinhardt never expected anything good to happen to him.But his world completely changed when he awakened as an Ascendant, and accidentally summoned a member of the Demon Race in his house.Just because he messed around with a god damn book!

A cauldron, a secret forging method, and his blood created an ultimate weapon. The youngest Sword Crafting Master on Earth had been reborn from another world. With the Nine Yang Divine Furnace and a scroll of Divine Equipment, he was like a fish in water, standing at the pinnacle of the martial way. There were tens of thousands of clans, billions of cities, and countless experts. He was the master of ups and downs!

Crossing to One Piece world, he became Roger’s younger brother.

Traveling through the world of Genshin Impact, Li Xingshan accidentally activates “Evil Simulator”

Had to be a big badass in The Sims.

“Shen He, you don’t want Chongyun to be expelled from school, do you?”

“Captain Qin, you don’t want Barbara to be an idol, do you?”

“Gan Yu, you don’t want these photos to be seen by others, do you?”

“Lei Movie, you don’t want Guo Beng to be bullied at school, right?”

…………

In order to make up for the evil things done in the Sims, Li Xingshan can only accumulate virtue and do good in reality.

Who knew that one day, Shen He, holding a long spear, appeared in front of him: “Li Xingshan, if you have done all the bad things, I will kill you today and do justice for the heavens!”

Li Xingshan: ? ? Wait, aren’t those fake?

- Description from novelbuddy