Six Names on One Marunouchi Stage
The 11:00 a.m. session at the Marunouchi Piccadilly theater in central Tokyo carried the biggest lineup of the day. According to the event listing on Anime Hack, the anime news arm of Japanese film site eiga.com, the stage brought together the TV series regulars and the film's guest cast: Miho Okasaki (Rimuru) and Asuna Tomari (Gobta), alongside Saori Onishi, Koichi Domoto, and idol group Hinatazaka46's Nao Kosaka and Kaho Fujishima.
Onishi (Ais Wallenstein in the DanMachi franchise) voices Yura, the new character at the center of the film's story. Domoto plays Zodon, another of the movie's original characters, while Kosaka and Fujishima voice Mio and Yori.
Tickets cost 2,500 yen (tax included) and were sold through the ticketing platform Ticket Pia in two waves. A lottery-based advance reservation ran from January 30 to February 19, with results announced around 6:00 p.m. on February 20, and a general sale followed from February 21 to 27. Buyers were capped at two tickets each.
Four Shows, Three Theaters, One Saturday
The Marunouchi opener was the first stop in a relay that packed four stage greetings into a single day. The full schedule ran Marunouchi Piccadilly at 11:00 a.m. and 2:25 p.m., TOHO Cinemas Shinjuku at 3:30 p.m., and Grand Cinema Sunshine Ikebukuro at 5:30 p.m.
Okasaki, Tomari, and Onishi were listed for every stop. Per the film's official site, Domoto, Kosaka, and Fujishima joined only the two Marunouchi sessions. The date put the cast in front of opening-weekend audiences: the film hit Japanese theaters one day earlier, on February 27, 2026.
An Undersea Kingdom and a Water Dragon
Tears of the Azure Sea takes Rimuru's story to Kaien, a kingdom on the ocean floor whose people worship a water dragon as their guardian deity. As the listing's synopsis tells it, Kaien's founders once lived on the surface among other races and wandered the world in search of peace before settling in the conflict-free realm the dragon granted them.
The film is the second theatrical entry in the franchise, following 2022's That Time I Got Reincarnated as a Slime the Movie: Scarlet Bond. It runs on an original story by series creator Fuse that bridges the third and fourth TV seasons, with animation production at Eight Bit, the studio behind the TV series, and distribution by Bandai Namco Filmworks.
Looking Ahead
The film has since gone global. Crunchyroll rolled it out theatrically outside Japan starting April 28, 2026, in parts of Europe, with United States and Canadian screenings from May 1 in both subtitled and English-dubbed versions.
The franchise itself has not slowed down either. The fourth TV season's second cour began airing in Japan on July 3, 2026, with Daoko and Azusa Tadokoro handling the new theme songs, according to Anime Hack's earlier reporting.