Marine Headquarters.
Akainu: Caesar, you’re too reckless.
Caesar: You actually told me to leave those prisoners alive? Those pirates never should have lived.
Sengoku: That’s enough, both of you. Caesar, you’re promoted to Headquarters Vice Admiral. For now, you’ll be in charge of intelligence work.
Years later, when all the Marines saw Caesar looking sickly every day, they thought he had finally turned over a new leaf.
Meanwhile, out on the sea, someone had set out to conquer the world.
Years later, when the Marines and pirates stormed Mary Geoise together:
The Five Elders: Caesar, have you betrayed us too?
Caesar: No. I’ve always been a rebel!
It's too short and not enough to watch. I finished it in one go. It's very good and worth watching!