My System Hunts One Piece Protagonists

With a terminal cancer diagnosis and a life spent abandoned, Karan's only escape was a desperate leap from a rooftop. He crash-lands into One Piece's brutal Gray Terminal, his cancer now terrifyingly advanced. His grim reality is a double-edged 'Ludo Game' System: every random roll brings a chance at salvation or a cruel worsening of his terminal illness. His only lifeline? A horrifying core quest: 'Hunt Destiny Child, Destiny Villain, Crossed Over, Reincarnator.' His first targets: a trio of innocent, yet destined, children – Monkey D. Luffy, Portgas D. Ace, and Sabo. To live, Karan must become the ultimate anti-protagonist, preying on the very figures destined for greatness. Can a dying, cynical man, armed with only a pistol and a cursed game board, hunt down the future Pirate King and his brothers? Or will destiny, and his own failing body, claim him first?