On December 19, 2019, the song was announced in a video shared on the band's official social media, and serves as a thank you to the fans for helping them celebrate their 20th anniversary.[1]
On December 23, a teaser video was uploaded to Arashi's YouTube channel, made in collaboration with the anime One Piece. The 39-second video has the five animated members of the band mingling with the crew, up until the moment when Arashi is about to give a concert.[2][3] The full version video was released on January 4, 2020.[4]
The video starts with a black screen and as the music starts playing the words "ONE PIECE X ARASHI SPECIAL MUSIC VIDEO A-RA-SHI: Reborn" appear on screen. When the lyrics start, the band stand in a blank blue space in front of a large white piece with the band's name on it, with their backs to the camera and each member having their left balled out fist rise (similar to the Straw Hat Pirates farewell to Nefertari Vivi). They turn around and dance while continuing the song, as wanted posters with each member's animated face introduce the band's members. They then pose to the camera, and the image is animated and seen on a newspaper, with the title of the band being missing.
On board the Thousand Sunny, the paper is read by Monkey D. Luffy, when Usopp and Tony Tony Chopper read the article, and are shocked. Nami is then seen on her Shiro Mokuba I, scoping and seeing the band on a deserted island, asking for help. The Straw Hats rush to their aid and hang out with the band, exploring the island.
Luffy, Jun Matsumoto, and Chopper, ridden by Kazunari Ninomiya and Masaki Aiba, are running through the woods. Sho Sakurai and Zoro are cutting down firewood, with Zoro expertly using Enma. Matsumoto, Usopp and Luffy are then seen carrying supplies, while Franky, Chopper, Ninomiya and Satoshi Ohno are setting up camp. Ohno is then seen fishing with Brook on the rail of the Thousand Sunny, while Aiba and Jinbe are diving. Ohno is seen catching a fish, and joins Sanji in the kitchen while Luffy and Aiba eagerly await the meal, much to the cooks' annoyance.
On the island, Ninomiya uses a slingshot to drop a large fruit into a basket carried by Usopp. By the Sunny, Aiba and Jinbe emerge from the depths on the back of a whale shark, jumping above the ship, while in the library, Sakurai and Robin are reading a book titled "The Sea" and Matsumoto and Nami are charting out a map. Back on the island, Ohno is then seen talking to Franky, and they are interrupted by Aiba and Chopper making a cotton candyGeneral Franky. At night, the two groups have a campfire party.
Sometime later, the two groups sail off on a stormy sea, but are attacked by numerous Sea Kings. Jinbe, Zoro, and Sanji fight off the beasts. Franky launches a Coup de Burst with both ships tied together flying off to safety, toward the band's concert. Nami clears the skies, and creates a rainbow bridge to the event hall, as the band rushes to the stage.
The band are performing on top of their ship, and are joined by the Straw Hats. As the crowd enjoy the show, Franky presses a button that opens up the stadium and surroundings, creating a passageway to the sea. The band prepare to sail off, cheered by their fans, and launch a Coup de Burst of their own as their ship flies away, with the Straw Hats sending them off with a smile.
Arashi's ship sails the sea with sakura petals in the wind toward the setting sun, as one petal flies across the camera, and the live band look toward the horizon. The color spread from Chapter 967, featuring the animated band, the Straw Hats, and the groups' ships is faded in before the screen fades out to black.
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