What episode is "Break Through! The Straw Hat's Mighty Sea Battle!" in One Piece?
"Break Through! The Straw Hat's Mighty Sea Battle!" is episode 863 of One Piece.
Spoiler-Safe Summary
safe readLuffy continues to sharpen his Haki in battle against Katakuri as Sanji and others navigate complex alliances and battles aboard different ships. Meanwhile, Big Mom summons powerful allies to confront the Straw Hats in a high-stakes pursuit.
Full Plot Summary
spoilersLuffy continues focusing during his fight with Katakuri in order to improve his Haki. Meanwhile, Perospero is horrified to learn that the wedding cake is on Bege's ship, but on that ship, Sanji forbids Bege from poisoning the cake. Carrot decimates Daifuku's fleet, clearing the way for the Sunny crew to outpace the Big Mom Pirates' fleet, and Brook brings her back to the Sunny. However, Big Mom then summons Zeus and Prometheus to her side as, with them and Napoleon, she leaps onto the Sunny to look for the cake.
Episode FAQ
4 quick answersIs "Break Through! The Straw Hat's Mighty Sea Battle!" canon or filler?
"Break Through! The Straw Hat's Mighty Sea Battle!" is listed as canon in the current AnimeAnchor guide.
What story arc is "Break Through! The Straw Hat's Mighty Sea Battle!" part of?
"Break Through! The Straw Hat's Mighty Sea Battle!" is part of the Levely Arc.
Can I read this without spoilers?
Yes. Start with the spoiler-safe summary, then reveal the full plot only when you want the complete episode breakdown.
Series Cast
18Browse the main cast connected to this episode guide.
Brook main 
Franky main 
Jimbei main 
Monkey D. Luffy main 
Nami main 
Nico Robin main 
Roronoa Zoro main 
Sanji main 
Tony Tony Chopper main 
Usopp main 
Buggy the Clown supporting 
Dracule Mihawk supporting 
Emporio Ivankov supporting 
Gol D. Roger supporting 
Monkey D. Dragon supporting 
Monkey D. Garp supporting 
Portgas D. Ace supporting 
Rayleigh supporting Related Movies
6Franchise movie releases are kept separate from the TV episode spine.
One Piece: The Movie 2000 
One Piece: Clockwork Island Adventure 2001 
One Piece: Chopper's Miracle on the Blob Island 2002 
One Piece: Dead End Adventure 2003 
One Piece: The Cursed Holy Sword 2004 
One Piece: Baron Omatsuri and the Secret Island 2005