Question : Hello, Oda! I wrote this letter from France, and I wanted to know how the members of CP9 got promoted into CP0. I wish you good luck!
Oda : Ok, because of the translation, the Japanese got weird, so I just put the message as is. Firstly, let's talk abou the CP9, who were defeated at Enies Lobby. They CP9 members appeared in the Cover Story Series - CP9's Independent Report, in which they were blamed by their chief, Spandam, with the "Sin of Mission Failure", in which they decided to vanish somewhere else.
That's how their training to get stronger started. On the other hand, for some reason, due to the authority of Spandine, Spandam's father, he got promoted as Chief of CP0! From here, Lucci and the others uncovered the "Invasion Crime" plot that the underworld bigshot and former Level 6 prisoners were scheming with Spandine and crushed those organizations to prevent it.
After that Incident, Lucci and the others were reinstated as agents of CP0. Spandine is on his sickbed and lost all his authority, and Spandam became Lucci's underling.