Is there any One Piece novel that starts out as a decent character but is gradually swallowed up by ambition, and is finally defeated by the protagonist Luffy to find himself again?
Others save key figures when they travel through time, but he specializes in tearing down the Kozuki family. Oden hits the last blow as soon as he dies, and turns Mitsuki Toki's ability into his own. This counter-intuitive operation changes the tragic story into a villain story.