The World's most Overpowered Side-Character - Chapter 21: I see you

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

Kai was a 17-year-old dropout. A NEET. A background character in real life with nothing to his name but bitterness, novels, and guilt. After his parents died, he gave up on the world. People were fake. Dreams were pointless. And that one novel he kept reading? He hated it especially the main character, June. Perfect, noble, always standing tall. Everything Kai wasn’t.Then, one night, a voice asked: “What if you did meet June?”He said yes, half-asleep and half-mocking.Now he’s trapped in the novel. Isikeid. But he’s not June. He’s not a hero. He’s not even in the main cast.He’s an extra in the background of a world he knows too well and he’s had enough of watching things play out the same way. This time, he’s going to change everything. Whether the world likes it or not.

When the Terminally Ill Noble Allenbert woke up from his fever, he realized that he was the reincarnation of Karzan, the mad dog who roamed the underworld.…But something about this place doesn’t feel right.“Allenbert, nobles need secrets and darkness.”The sinister and chilling schemes of his brother, like a snake, are suffocating him from all sides.“You’ve been causing quite a stir lately.”The powerful and authoritative eyes and ears of the head of the family are hidden everywhere, watching him.“…When will I see Mother?”Meeting his mother, who has secluded herself due to a mental illness, seems impossible.“But it’s okay.”Karzan failed, but Allenbert’s journey is just beginning.“Two lives, two revenges.”There’s no mercy.I’ll pay back with interest, and make sure it’s done properly.

I had nothing left to live for.No family. No friends. No future.Just a shattered soul wandering through a world that had already taken everything.Then I died.And that’s when everything changed.I woke in a world of light. A void between realms. A place where gods whisper and broken souls wait to be judged. There, I met Ashen Crimson—a man who had once been worshipped, then feared, and finally cursed by the very gods he had defied. A tyrant who had destroyed his own world.But now, he’s offering me something terrifying:His life. His past. His power. His chance to make things right.The catch?The world of Zerawell is fractured.Ashen’s name is soaked in blood.His fate is sealed—exile, ruin, and eternal hatred.And now, it’s my name.Because I’ve been reborn as Ashen Crimson, heir to a house that both reveres and reviles me. A noble with dormant shadow magic, a shattered reputation, and a cursed destiny I never asked for.But I’ve lived a life of pain. I’ve walked alone through hell already.And I won’t follow his footsteps into madness.With a divine system familiar in my soul, a second chance burning in my chest, and the memories of a monster as my burden—I will rewrite this fate.Let them call me villain, disgrace, or traitor.I didn’t choose this story.But I’ll finish it.Even if it kills me.