Ichiban Ushiro no Daimaou - Volume 1, Chapter 1 — The Demon King is Born

Leiyin accidentally crossed into the One Piece World, and accidentally obtained the Naruto System.

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?

This novel is also known as Only I Level Up

10 years ago, after “the Gate” that connected the real world with the monster world opened, some of the ordinary, everyday people received the power to hunt monsters within the Gate. They are known as “Hunters”.

However, not all Hunters are powerful. My name is Sung Jin-Woo, an E-rank Hunter. I’m someone who has to risk his life in the lowliest of catacombs, the “World’s Weakest”.

Having no skills whatsoever to display, I barely earned the required money by fighting in low-leveled catacombs… at least until I found a hidden catacomb with the hardest difficulty within the D-rank catacombs!

In the end, as I was accepting death, I suddenly received a strange power, a quest log that only I could see, a secret to leveling up that only I know about! If I trained in accordance with my quests and hunted monsters, my level would rise.

Changing from the weakest Hunter to the strongest S-rank Hunter!

- Description from Novelupdates

Hero is an ultimate strength body existence. The troops that he leads will follow him as he become stronger and stronger divine existence. , a global online game that is jointly developed by America, China, Europe, Russia, India, Japan and Korea , consists genres of fantasy, adventure, war, entrepreneurship, territory construction, navigation, battle, and leisure.

The players from the whole world are obsessed with this game. Every country sends their top professional gamers to participate the world tournament to demonstrate their talent. Da Fei once was an expert in treating every kind of severe internet addiction. After leaving the game for many years, he targets Hero Creates Legend’s unlimited business potential.

- Description from Novelupdates