TL;DR, The new Sgt. Frog feature film announced guest voice appearances by artist ano and comedian Soshina, and a narrator. The film opens in Japan on June 26, 2026 as part of the series 20th anniversary.

Artist ano and comedian Soshina will guest voice in the new Sgt. Frog feature film, opening in Japan on June 26, 2026.

The pair also team on the opening theme, and ano sings the main theme, marking a lively 20th anniversary return for Keroro and crew. That makes this Sgt Frog new movie guest voice cast reveal a clear draw for longtime fans and newcomers.

The film is titled Shin Gekijoban Keroro Gunsou: Fukkatsushite Sokkou Chikyu Metsubou no Kiki de Arimasu! and brings the platoon back for a Reiwa-era mission.

Sgt. Frog movie adds guest voices ano and Soshina

The official site announced the guest voice cast of ano and Soshina for the all-new feature, alongside their joint opening theme Mata Kaettekitakero! to March. In the latest Sgt Frog movie announcement, the duo’s participation bridges music and comedy with Keroro’s brand of chaos.

The film lands a June 26 2026 release in Japan.

Shin Gekijoban Keroro Gunsou: Fukkatsushite Sokkou Chikyu Metsubou no Kiki de Arimasu! marks the franchise’s 20th anniversary project. Yuichi Fukuda serves as general director on his screenplay, with director Fumitoshi Oizaki and character designer Satoshi Koike.

BN Pictures handles animation production, keeping the series’ playful, gag-heavy timing in seasoned hands.

Five original voice actors return to their roles, anchoring the new cast additions. The original manga by Mine Yoshizaki still runs in Monthly Shonen Ace, and the 2004, 2011 TV anime’s 357 episodes stream via Crunchyroll from Discotek Media. If you track casting waves across anime, recent updates like the Second Prettiest Girl cast show how creators spotlight buzzy guest turns.

• Guest voices: ano and Soshina, both appearing in the film.
• Opening theme: Mata Kaettekitakero! to March, performed by the duo.
• Japan release date: June 26 2026, set by the official site.
• Anniversary tie-in: Part of the Sgt. Frog 20th anniversary project.
• Title: Shin Gekijoban Keroro Gunsou, full subtitle confirms a planet-scale crisis.
• Staff: General director Yuichi Fukuda, director Fumitoshi Oizaki, designer Satoshi Koike.
• Studio: BN Pictures oversees animation on the feature.
• Returning cast: Five original actors reprise their iconic roles.
• Series roots: Manga by Mine Yoshizaki, TV anime aired 2004 to 2011.

Who ano and Soshina play in the Sgt. Frog movie

ano steps into the booth as a researcher robot who supports Aruru and Deruru, two new film-original characters. That “ano role researcher robot” pairing fits her cool, nimble delivery, which should click with Keroro’s rapid-fire humor. She also performs the main theme, Kashippanashi Destiny, giving her a dual presence across the story and soundtrack.

Soshina voices a man in Shibuya who fires up after a yokai takes hold, a “Soshina yokai possession” bit that leans into his comic timing. He remarked that Keroro’s signature style hit hard even in scenes around his cameo, and he encouraged both new and longtime viewers to enjoy it on the big screen.

Beyond their cameos, the duo energize the Opening, Mata Kaettekitakero! to March, with a brisk, homecoming vibe. Pairing that with Kashippanashi Destiny positions music as a major hook for this return.

com/kimi-wo-aisuru-cast-announcement/”>Kimi wo Aisuru cast update, which shows how artists jump between mic and script.

• ano’s character: a researcher robot assisting Aruru and Deruru on key missions.
• Song duties: ano leads the main theme, Kashippanashi Destiny.
• Opening theme: Mata Kaettekitakero! to March, a joint performance by ano and Soshina.
• Soshina’s role: a Shibuya resident sparked by yokai possession, brief but punchy.
• Tone match: both roles favor quick reads and expressive delivery.
• Fan appeal: cameo energy pairs with memorable hooks from two fresh voices.
• Story tie: the robot role hints at field support and puzzle-solving beats.
• Comedic beat: Soshina channels street-level chaos during the possession gag.

When the Sgt. Frog 20th anniversary movie opens and what to expect

The feature opens in Japan on June 26 2026, timed to the 20th anniversary project celebrating Keroro’s anime legacy. Titled Shin Gekijoban Keroro Gunsou, the movie rallies the platoon after bizarre nationwide phenomena shake their lazy routine. The official synopsis points to the largest-scale battle for the invaders in the Reiwa era.

Two new characters, Aruru and Deruru, enter the fray with ties to a mysterious symbol trail. The Keroro Platoon, jolted by the crisis, takes action to decode that threat. With returning leads, polished gags, and movie-grade stakes, expect classic banter stacked against disaster-level set pieces.

The movie narrator announced is Shinobu Hasegawa of comedy duo Sissonne, adding a seasoned voice to stitch chaos together. Yuichi Fukuda oversees as general director, with Fumitoshi Oizaki and Satoshi Koike steering designs. For more casting momentum across the season, see the Dukes Son cast reveal, a snapshot of how premieres spotlight voice lineups.

• Release: Japan theatrical debut on Friday, June 26 2026.
• Anniversary: Part of the franchise’s 20th anniversary project.
• New faces: Aruru and Deruru drive fresh story threads and discoveries.
• Scope: Reiwa-era, largest-scale battle teased by the official outline.
• Narration: Shinobu Hasegawa confirmed as the film’s narrator.
• Creative team: General director Yuichi Fukuda, director Fumitoshi Oizaki.
• Design: Satoshi Koike on character designs, BN Pictures on production.
• Continuity: Five original cast members reprise signature roles.
• Catch-up: 357 TV episodes stream via Crunchyroll for a refresher.

Related: Kimi wo Aisuru cast.

Source: Crunchyroll