I Own EVERY Class in This World: Life Set to HELL Mode! - Chapter 300: The Appearance of the Devil’s Abyss (Finally)

Why build a harem……when you can steal everyone else’s?Rejected without confessing. Friendzoned before even speaking.Too bad for them—he’s done being average.Armed with a system that thrives on charisma (even if his starts at rock bottom), sharp tongue, and unmatched game sense, Eiden isn’t here to play nice. He’s not the hero, not the villain—he’s the damn glitch in the story.The protagonist ?? He’ll outwit them.The arrogant beauties? He’ll make them kneel.The childhood sweethearts, the princesses, the cold beauties?They’ll come to him. Willingly.This isn’t your story. It’s his conquest.And no harem is safe.

A boy from 21st century Earth, met an accident and later was reborn in Naruto’s Ninja World.
He is born in Uchiha Family and becomes the useless brother of Itachi Uchiha and Sasuke Uchiha…. Let’s see how he changed the Naruto world.

- Description from Novelupdates

The rivers and lakes carry wine with swords, the waist is slender and the palm is light.

The young man carried a long knife on his shoulder, and hung wine on his waist, striding forward, but the rivers and lakes in his heart were vaguely visible.

Turning a page in the book of troubled times, the rivers and lakes have been raining nightly for decades.

Looking back suddenly, the world has been shattered.

- Description from novelbuddy

A broken man who ended his own life finds himself reincarnated into the game he used to play. However, instead of becoming the protagonist or a powerful antagonist, fate places him in the role of a minor villain—a mere stepping stone for the protagonist in the game's first arc.