That Time I Got Reincarnated as a Slime the Movie: Tears of the Azure Sea

A month after the conclusion of the Tempest Founder's Festival, Rimuru Tempest and his companions accept an invitation from Elmesia El-Ru Sarion, the Celestial Emperor of the Magi Dynasty Salion, for a vacation at a private resort. Their peace is shattered by the arrival of Yura, a priestess from the undersea nation of Kaien, who seeks help to save her people. The kingdom of Kaien, which worships the ancient Aqua Dragon, is being threatened by a mysterious pollution of the "Azure Sea" and a conspiracy to forcibly awaken the dormant deity. Rimuru and the Tempest executives must dive into the deep sea to uncover the plot and stop an invasion of the surface world. ==Voice Cast==

The film was officially announced on September 27, 2024, following the finale of the anime's third season. Eight Bit returned for the animation, under the direction of Yasuhito Kikuchi. The production utilized advanced water-physics CGI to render the underwater kingdom of Kaien, a first for the franchise. ==Music==

The film's soundtrack is composed by Hitoshi Fujima of Elements Garden. Theme Song "Eutopia" by TRUE Insert Songs "Soukoku" (Conflict) by Saori Ōnishi "Harmonics" by Stereo Dive Foundation ft. ASH "Renai No" by ARCANA PROJECT ==Release==

The film is scheduled to open in 380 theaters across Japan on February 27, 2026, including IMAX and 4D formats. A special commemorative CD single, "Soukai no Yurameki," will be released on February 28. International distribution rights are held by Crunchyroll, with a planned North American theatrical window of May–June 2026. Muse Asia will release the Movie in Southeast Asia and India in 2026. ==References==