Naruto System in One Piece - Chapter 115

Ten years ago, Joseph Cassian was thrown into a maximum-security prison for crimes he didn’t commit framed by the very family whose blood runs through his veins.Now, at twenty-eight, he walks free into a world where the city’s mafia empires have mysteriously crumbled. Their leaders, slaughtered. Their empires, burned.All while Joseph sat in silence behind bars... no one can prove he did anything and yet it all happened as if he planned it.Was he just a wrongfully imprisoned scapegoat, a man who survived injustice?Or is he a mastermind a Don who orchestrated revenge so flawlessly that not even he had to lift a finger?Now that he’s free, Joseph stands at a crossroads.He can leave the blood behind, walk away from the ashes of an empire that once owned the city.Or he can claim what’s left of his legacy and become the very Don the world has feared all along.

Kieran was just an ordinary part-timer — a high school dropout who had also given up on boxing. With no parents and no real family, he survived by working his ass off every day. He was raised by a man he believed to be his father, but later discovered he wasn't — though the man passed away before the truth could fully sink in. What Kieran didn’t know was that he was actually the sole heir to a powerful business empire, the hidden son of a wealthy tycoon.

Being given a chance and reincarnated is nice and all, yet why do I have to become that male friend who just watches the protagonist flirting with his harem?---World: Kaguya-sama: Love Is War - Hyouka ----