In the World of Sword and Magic as Space Marine - Chapter 137: The Council of Final Quest

After the untimely death of his father, Jinwoo is left to navigate a new and difficult reality.With only his stepmother and two step-sisters remaining, the once bright world Jinwoo knew turns dark and uncertain.But the passing of his father isn’t just a tragic loss—it reveals a tangled web of secrets that no one anticipated.******What to expect :-Smut-Hardcore Incest-No NTR-Netori(MC steals someone else's girl)

In a world where human and monsters relied on mystical fruits and their inner power to fight for dominance, a lost soul was thrown, given the powers from all the other worlds he’s known. But there was a catch; he had no control over what power he would get! With knowledge beyond that of most, he sails his path to the top of the one piece world!

- Description from Novelupdates

Among the demons, the supreme ones are called “Great Saints.”

A young man leaves his mountain village and travels around the world. By unceasing efforts, he finally becomes a legend of the age.

- Description from Novelupdates

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