One Piece: Unreal Adventure - Chapter 9: Gramps is Back Again

Dale Mitchell, your average guy in a below-average job. But, what happens to him is anything but average. After hitting someone in his truck, his world was turned upside down, inside out, and more than fifty shades of grey.

Now, he seems to be something called a World Keeper, and must create and manage his own world. Is this his afterlife, or something else entirely?

A detective travels across the United States and becomes an agent of the Los Angeles Police Department.

After getting through the initial confusion, he repeatedly solved strange cases, became famous all over the world, and was called the most legendary detective in history…

- Description from novelbuddy

After mistakenly contributing all of his attribute points to the drop rate, Xiao Shi found that every time he killed, he would get an item.

Slapping a mosquito to death, drop a pill.

Killing an evil spirit, drop a secret book.

Slashing a martial artist to death, drop the opponent’s cultivation tips.

….

When killing, Xiao Shi was shocked… “How did I become invincible?”

Quinn Winter is a young man from another world. One day, he is suddenly chosen to become the new Demon King. But the Demon Kingdom is in big trouble – it's losing a terrible war against the human kingdom called Gran'le.To help his people, Quinn comes up with a risky plan. He will sneak into Gran'le and learn their secrets. But things don’t go as planned. A powerful noble sponsors him, and he ends up joining Heavenward Academy, the top school for training future heroes.At the Academy, there's a big challenge called the Selection. The best students become Paladins – magic knights who fight demons. Quinn doesn’t want to become a Paladin. He is a demon king! But now, he’s stuck in the Selection… and if he wins, he’ll become the very thing he’s supposed to destroy.He started the day badly. Now, things are getting even worse.