He wakes up as Roronoa Zoro before Shells Town, carrying another life in his head and a vow that suddenly feels much heavier than memory.

The Oath System rewards pain, discipline, loyalty, and the promises he refuses to break. It can make him stronger faster than canon ever allowed, but every shortcut leaves a mark.

Zoro can change the Grand Line. He can save people who were supposed to suffer. He can become a monster early.

The hard part is doing all of that without stealing Luffy's dream or turning the crew into something the sea no longer recognizes.