Mine Yoshizaki's Sgt. Frog is in a full revival cycle. The new anime began airing Saturday, October 3, 2026, and Kadokawa is running a free all-35-volume ebook fair to push readers through the manga back catalog.
Mine Yoshizaki's Sgt. Frog is amid a coordinated revival. The year has been built around a new theatrical film, promotional partnerships, and now a broadcast anime. The first new Keroro Gunsou film in 16 years, Shin Gekijouban Keroro Gunsou: Fukkatsu Shite Soku Chikyuu Metsubou no Kiki de Arimasu!, opened in Japanese theaters on June 26. That film is the anchor for the run of activity. The franchise paired with karaoke chain JOYSOUND through July 31, and the film's theme song, "Kashippanashi Destiny" by ano, arrived in a collaboration music video on June 14.
The revival also handed back-catalog material a wider reach. ABEMA ran all 358 episodes of the TV anime free daily from June 13 to July 10, and the first Keroro Gunsou film, originally from 2006, began streaming on TVer on June 21. Both runs were limited windows meant to rebuild familiarity before the theatrical release, and both favored free platforms. The franchise also announced its first official collaboration with Mobile Suit Gundam, a joint project with new illustrations by Yoshizaki and Yoshikazu Yasuhiko, and collaboration plastic models.
After the June theatrical release, the company kept the material moving. On October 1 and 2, 2026, Kadokawa ran a fair that made all 35 volumes of Sgt. Frog free to read across 12 ebook stores, including BOOK☆WALKER, BookLive, honto, Rakuten Kobo, au Book Pass, Reader Store, DMM Books, Comic Cmoa, LINE Manga, ebookjapan, Piccoma, and U-NEXT. The fair, and the manga that has run in Monthly Shonen Ace since 1999, is timed to the new Sgt. Frog anime, which began airing Saturday, October 3, 2026. The two-day giveaway and the ongoing manga run point to the same approach: treat the back catalog as a doorway into the current broadcast.
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Oct 5
Kadokawa is running an all-volumes-free fair for Mine Yoshizaki's manga Sgt. Frog on October 1 and 2, 2026, ending at 23:59 each day. Volumes 1 through 35 are readable at no cost on BOOK☆WALKER, BookLive, honto, Rakuten Kobo, au Book Pass, Reader Store, DMM Books, Comic Cmoa, LINE Manga, ebookjapan, Piccoma, and U-NEXT. The promotion is timed to the new Sgt. Frog anime, which begins airing Saturday, October 3, 2026. The manga has run in Monthly Shonen Ace since 1999 and is still ongoing. It follows an alien frog from Planet Keron who arrives to invade Earth, is captured by the Hinata siblings Fuyuki and Natsumi, and ends up living with the family as a lodger. A theatrical anime screened in June 2026. The fair notes that store end times, prices, and eligible products may differ by retailer.
Jun 21
The first theatrical film in the Keroro Gunsou series, Chou Gekijouban Keroro Gunsou, began streaming on the Japanese free ad-supported platform TVer on June 21, 2026. The 2006 film will be available for one week, through June 28. This marks the first time the movie has been distributed on TVer. The film was directed by Nobuhiro Kondo and features a voice cast including Kumiko Watanabe as Keroro, Etsuko Kozakura, Joji Nakata, Takehito Koyasu, and the late Tomoko Kawakami. The streaming launch coincides with the upcoming release of the franchise's first new theatrical film in 16 years, Shin Gekijouban Keroro Gunsou: Fukkatsu Shite Soku Chikyuu Metsubou no Kiki de Arimasu!, which opens in Japanese theaters on June 26. The new film is written and chief directed by Yuichi Fukuda, with Toshimitsu Osa directing. The original Keroro Gunsou manga was created by Mine Yoshizaki.
Jun 20
A collaboration between the Keroro Gunsō anime franchise and karaoke service JOYSOUND runs until July 31. It streams anime videos of songs from the new film and past series, and offers signed cast posters and QUO cards as prizes through the Kyoku Navi JOYSOUND app.
Jun 13
A collaboration music video for the new Sgt. Frog film, featuring theme song "Kashippanashi Destiny" by ano, will premiere on June 14. A teaser video was released on June 13. The MV uses footage from the film and is directed by Eita (maxilla) with editing by tachi. The film opens on June 26.
Jun 9
Ahead of the first new Keroro Gunso film in 16 years, the franchise has announced its first official collaboration with Mobile Suit Gundam. Footage shows Gundam appearing to help the Keroro Platoon, and new illustrations by Mine Yoshizaki and Yoshikazu Yasuhiko have been released. Collaboration plastic models will also be sold.
Jun 6
ABEMA will launch a limited-time special channel for the TV anime "Sgt. Frog" starting June 13, broadcasting all 358 episodes from the first seven seasons free daily until July 10. The channel commemorates the June 26 release of "New Theatrical Film☆Sgt. Frog: Revived and Quickly the Crisis of Earth's Annihilation, desu!," the first theatrical film in about 15 years. Episodes will be available for free catch-up viewing for one week after each broadcast. The original manga by Mine Yoshizaki began serialization in Monthly Shonen Ace in 1999. The TV anime adaptation debuted in 2004 and ran for seven years, producing five theatrical films during its original run. The new film marks a return for the franchise after a long hiatus from theaters. The special channel runs from 1:00 PM on June 13 to 9:30 PM on July 10, giving viewers a month-long window to revisit or discover the series ahead of the film's premiere.