is a Japanese drama, the 35th entry of Toei Company's Kamen Rider metaseries, and the sixth series to debut during the Reiwa period. The series debuted on September 1, 2024, joining Bakuage Sentai Boonboomger and later, No.1 Sentai Gozyuger in the Super Hero Time lineup after Kamen Rider Gotchard's finale. The series concluded on August 31, 2025 and was succeeded by Kamen Rider ZEZTZ. It also marks the debut of a snack motif including gummy candies, potato chips, marshmallows, chocolates, and lollipops.
Shoma is a human-Granute hybrid and the youngest child of the Stomach Family, a powerful family in the Granute World that made a profit in the black market with their addictive Dark Treats and utilizing their addicted clientele to gather the secret ingredient of their product: humans. After their father Bouche died and his oldest brother Lango takes over the company, Shoma escapes to Earth after his mother was murdered by his half-siblings. There, Shoma learns of the modifications his father commissioned on his body allow him to produce Gochizo, using them to become Kamen Rider Gavv. Adopting his motherâÂÂs surname, ShomaâÂÂs struggle as Gavv to keep humans from being kidnapped and processed into Dark Treats puts him as odds with his half-siblings with his sister Siita the first to fall.
Shoma is aided by Sachika Amane, CEO of the jack-of-all-trades shop Hapipare, who takes him in, his granduncle Dente Stomach who have since defected his family before Shoma did, and Hanto Karakida, a freelance writer whose investigation of the Granutes led to him becoming Kamen Rider Valen via a modification surgery by researcher Kenzo Suga, an accomplice of Nyelv Stomach. The two riders are later joined by Rakia Amarga, a Granute who joined Stomach Inc. under false pretenses to be made into Kamen Rider Vram to destroy the company for causing the death of his younger brother. Suga eventually reveals his true colors when he creates clones of Shoma that transform into Kamen Rider Bitter Gavv, before he create his own Rider power to transform into Kamen Rider Bake. Though killed by Hanto, Suga entrusted Nyelv to continue their work.
One month later, through the actions of SiitaâÂÂs twin brother Jiip, the Stomach siblings are powerless to a corporate take over by the Granute WorldâÂÂs ruling family, the Jaldaks, with Nyelv making batches of new Bitter Gavvs that include Jiip and the reanimated Suga. After avenging Dente's death by his sister Glotta, Shoma learns from Hanto that the candy shop owner he met, Masaru is a brother of his late mother. As Bocca Jaldak and the remaining Stomach siblings are killed, Shoma stopping Lango from a mass farming of humans, Hanto and Rakia devastate Stomach Inc. with the former saving the human while latter stays behind to destroy the interdimensional gates between Granute World and Earth with Lizel Jaldak and some part-time Stomach Inc. employees stranded on the human world.
Three months later, the Granute World is being rebuilt under a new administration, and Shoma is devising Light Treats for the still addicted part-timers.
The Kamen Rider Gavv trademark was registered by Toei Company on April 27, 2024, and published on May 10, 2024.
Gavv was officially announced on July 1, 2024.
The opening theme song "Got Boost?" is performed by dance and vocal group Fantastics from Exile Tribe.
Kamen Rider Gavv debuted in the feature film Kamen Rider Gotchard the Movie: The Future Daybreak.
is a film released on July 25, 2025, double-billed with No.1 Sentai Gozyuger: Tega Sword of Resurrection. Additionally, the main character of Kamen Rider ZEZTZ made his first appearance, portrayed by Ryutaro Imai as Baku Yorozu. The film was written by Junko KÃ Âmura and directed by Teruaki Sugihara. The theme song is "Candy Blaze" performed by Fantastics from Exile Tribe. Alongside the film, a short titled was shown. Although the events of the film appear to take place after episode 44 of the series, they are not set to take place between certain episodes and are loosely connected to the series.
is an upcoming V-Cinema release scheduled for a limited theatrical release on November 28, 2025, followed by its DVD and Blu-ray release on June 10, 2026. The events of the V-Cinema take place after the end of the series. The V-Cinema was written by Junko KÃ Âmura and directed by Takayuki Shibasaki. The theme song is "Super Delicious" performed by Gateau Trois (Hidekazu Chinen, Yusuke Hino, and Kohei Shoji). Alongside the V-Cinema, a short titled is scheduled to be shown.