One Piece: Fist of the World - Chapter 20: The Righteous Navy Passing By

After mistakenly pointing all the attribute points to the treasure drop rate, Xiao Shi found that every time he kills, he will drop an item.

A mosquito was slapped to death, and a pill fell out.

After killing an evil spirit, a cheat book fell out.

Hacking a martial artist to death will drop out the opponent’s cultivation experience.

…

- Description from novelbuddy

In the Comprehensive Martial Arts Continent, five great empires vie for supremacy!In the jianghu, Land Immortals reign supreme, their power overshadowing all living beings.However, when Bai Chen descends upon this world, everything changes, and the entire narrative takes an unprecedented turn!Feilu reminds readers: This novel and its characters are entirely fictional. Any resemblance to real individuals or events is purely coincidental. Please do not attempt to imitate.

A man reincarnates in the body of a boy who suffered a tragedy, only to realize that he is in the world of My Hero Academia. What's even stranger is that his quirk seems to have the abilities of Nen and Haki.

Tang Sect, the most famous martial arts sect of all. By stealing its most secret teachings to fulfill his dreams, Tang San committed an unforgivable crime. With his ambition attained, he hands his legacy to the sect and throws himself from the fearsome “Hell’s Peak.”

But he could have never imagined that this would reincarnate him in another world, one without magic, martial arts, and grudges. A land where only the mystical souls of battle lay.

The continent of Douluo.

How will Tang San survive in this unknown environment? With a new road to follow, a new legend begins…

- Description from Novelupdates