Episode 309

"Feelings Put Into Fists! Luffy's Full-Power Gatling" is the 309th episode of the One Piece anime, and takes place during the Enies Lobby arc.

Short Summary
The Straw Hats continue their fight against the marines while Usopp reveals himself to Luffy and encourages him to stand once more. Zoro has his Yubashiri destroyed by a Sabi Sabi Fruit user. Lucci traps Luffy using his tail and does his strongest Rokuougan on Luffy. With Luffy's memories of why Robin left, he forces himself to stand. Luffy defeats Rob Lucci using his most powerful attack, Gomu Gomu no Jet Gatling, which breaks Lucci through the wall and astounds all the Marines as they find out what just happened.