The Navy Rookies filler arc will end in "One Piece" episode 782 titled "Fist of the Devil- Showdown! Luffy VS Grant," which will be released on April 2. It has yet to be confirmed whether or not a new opening theme will be introduced in this arc.
Expect the Straw Hats to be still struggling with their food rations in "Fist of the Devil - Showdown! Luffy VS Grant," which was written by Hitoshi Tanaka. Satoshi Itō and Tetsuya Endō did the storyboard. Isamu Takara was the animation director with Itō as the episode director.
On March 19, the Straw Hat Pirates will be met with an original filler arc. This will center on Luffy and his crew as they travel to rescue Sanji, according to Weekly Shōnen Jump, as cited by Comic Book.
The original filler arc is the Navy Rookies arc, which will start in episode 780 titled "A Hungry Front! Luffy and the Navy Rookies!" This will be released on March 19.
The Navy Rookies filler arc will continue in episode 781 titled "The Persistent Trio- The Great Pursuit for the Straw Hats!" This will be released on March 26.
Before entering Big Mom's territory, the Straw Hat Pirates made an additional stop in the "One Piece" anime. This is different from the events of the manga.
The opening of "Fist of the Devil- Showdown! Luffy VS Grant" is 'We Can!" by Kishidan and Hiroshi Kitadani. The opening stars with the Straw Hat Pirates's silhouette and Luffy rushing forward after putting on his straw hat and ends with the Straw hat Flag in the wind and the Crew smiling.
Meanwhile, Japan's ambassador to Israel Koji Tomita, 59, attended Harucon 2017 cosplaying as Luffy on March 12, Sunday, NHK reported. Also present during Harucon 2017 were Toshio Furukawa, 70, who voiced Portgas D. Ace in "One Piece," and Shino Kakinuma, 51, who voiced Videl in "Dragon Ball Kai."
Here is a "One Piece" episode 779 review: