The official YouTube channel for the Sgt. Frog (known as Keroro Gunsou in Japan) franchise started streaming the opening footage of the latest feature film Shin Gekijoban Keroro Gunsou: Fukkatsushite Sokkou Chikyu Metsubou no Kiki de Arimasu! (translated as New Theatrical Movie Sgt. Frog: Upon Revival, Immediately Facing the Threat of Earth's Destruction! ). The clip features the film's opening theme "Mata Kaettekitakero! to March" performed by artist ano and comedian Soshina (a member of the comedy duo Shimofuri Myojo), who also make guest voice appearances. Shin Gekijoban Keroro Gunsou: Fukkatsushite Sokkou Chikyu Metsubou no Kiki de Arimasu! Opening Footage Additionally, ano and Soshina performed the opening theme on the music variety show "ano-chan no Denden Denpa," which aired late at night on June 16 on TV Tokyo, and the video of their performance is also available on the Sgt; Frog's official YouTube channel . ano & Soshina "Mata Kaettekitakero! to March" Performance Video As the sixth installment in the Sgt. Frog feature film series and the first in 16 years, Shin Gekijoban Keroro Gunsou: Fukkatsushite Sokkou Chikyu Metsubou no Kiki de Arimasu! opened in 350 theaters across Japan on June 26, debuting at fourth in the weekend rankings with 150,806,480 yen (931,400 USD) from 102,402 admissions.