Chapter 669

Chapter 669 is called "The Operation Begins".

Cover Page
Straw Hats and animals: "Vivi is tending to a frog with a cold, while Luffy is playing with Carue in the rain." A request by Yusaku Shibata (芝田優作) in Saitama Prefecture.

Short Summary
Zoro, Sanji and Brook are shown to have survived their encounter with the Yeti Cool Brothers. They find the samurai lying immobile in the snow after his torso was submerged in seawater. Caesar Clown reveals that the Slime creature was formed from the chemical weapon explosion four years ago, as well as the gaseous byproduct. The G-5 Marines attempt to break into Caesar's laboratory from the front, while Law and Chopper sneak in from behind. Luffy, Franky, and Robin fly in from above and land near the Marines, Luffy then yells out for Caesar to come out, so they can beat him up.

Chapter Notes

 * As explained by Rock in Chapter 667, the KYP bullets are the reason why Zoro, Sanji and Brook were unconscious in the snow.
 * Sanji is shown fighting in Nami's body without any problems.
 * Zoro, Sanji, and Brook find Kinemon, still without his torso, frozen in the snow.
 * Kinemon's torso has fallen in the lake and because of this he can't move or use his powers.
 * The Slime creature is revealed to be the result of the failed experiment that happened on Punk Hazard four years ago. Some time after the incident, Caesar didn't absorb the poison gas that was covering the island, but condensed it and converted it into Slime.
 * Tashigi uses Smoker's Devil Fruit powers, but is unable to control the transformation. This is the first time a person has been shown having difficulties controlling a Logia fruit.
 * Law is shown to maintain his room from a distance as he is seen to warp in an already made room behind the Punk Hazard Laboratory.
 * Law and Chopper sneak through to the back of the research facility, where Caesar and Monet are currently located.
 * Tashigi's sword is revealed to be fixed as she is seen using it against Punk Hazard residents.
 * Robin is shown using her Wing technique for the first time after the timeskip, since the Sabaody Archipelago Arc.
 * Luffy, Robin, and Franky begin their assault to kidnap Caesar and recklessly land in the middle of the entire fleet of G-5 Marines.