Naruto System in One Piece - Chapter 503

She fought in the Battle of Changping and witnessed the killing of hundreds of thousands. She once led the Qin Iron Calvary and battled against the Six Kingdoms. She has seen a third of the land and witnessed the breaking of mountains and rivers. The sound of a grand zither and the light of a great female emperor. A prosperous world that was forged on the battlefield. Yet, these two thousand years are forgotten from history.

- Description from Novelupdates

A 30-year-old NEET is reincarnated into the body of an otaku that choked to death on instant noodles. As he comes to grips with his new life, he realizes that this world is subtly different from Earth. The denizens of this world are far better looking, and this new world also possesses futuristic technology as well as mysterious Yin Yang masters!

The game spoilers turned out to be fake. The characters I gathered thinking they were heroes are actually all villains. In other words, I accidentally created a villainous organization.

“Hey, wait! I'm not a god, I'm just a guy who loves trash!”Rhys loves trash. Trashy anime, trashy novels, trashy games, he can't get enough. Which was all well and good until one day, his passion for trash gets him mistaken as an actual trash god. Whisked away into another world, Rhys wakes up in a trash heap as a trash talent with trash skills and no chance of progression. Given his trashy start, it seems there's no hope for him.Or at least, there wouldn't be for a lesser man. But Rhys loves trash.There's only one path before him. Embrace the trash! Empower the trash! Dig the diamonds out from the trash! Polish the trash until it shines brighter than gold! If there's one thing Rhys is passionate about, it's trash. And even in another world, he isn't going to stop until he proves that trash shouldn't be overlooked!What to expect: Trash charactersTrash skillsTrash storyNumber go upCultivation-style systemFast-paced progression