In JJK With Naruto Powers - Chapter 83: Maximum: Meteorite

With the ability of the King of Silver, the first king in “K”, to be immortal and immortal, he crossed into the world of One Piece. Although he became a Pirate, he did not target One Piece.

His goal is to live freely on the sea, it’s that simple.

- Description from novelbuddy

In 2100 at the turn of the century the first full dive VMMORPG game 'Omega' was released

“When I opened my eyes, I found myself as a character in a game. It was bewildering, but I thought it was worth a try. That was until I saw the skill given to me. It was [Opening Eyes], with no abilities whatsoever.”The story starts with the MC playing a game that is “Very Difficult”, so difficult, in fact, that no one has ever managed to kill the last boss. After 18 years of playing and, having the best attempt be at 30% of the last boss’s HP, he decides to try out a character that he never used.This character was the Slit-Eyed character. It had garbage stats and garbage traits. But, since the MC had ran out of options with every other character, he was trying to see if he could find any secrets with this new character. So he puts in his name ‘Zero’ and presses play… Only to find himself inside the game, as the Slit-Eyed character.

Six years ago, he disappeared silently! After six years, he becomes the unparalleled "God of War" and returns with glory, only to find that he has a daughter whom he never knew of. Looking at his wife and his daughter, he says, "In this lifetime, I'll bring you the greatest honor and glory!”