Lantis has released a lyric video for “Esoragoto” performed by Eir Aoi. The song is the new opening theme for the anime That Time I Got Reincarnated as a Slime Season 4. The video includes clips from recent episodes of the anime.
Season 4 of That Time I Got Reincarnated as a Slime premiered in Japan on April 3, 2026. The series is streamed internationally by Crunchyroll.
Eir Aoi “Esoragoto” Lyric Video (Opening Theme Song for the TV Anime “That Time I Got Reincarnated as a Slime Season 4”)
Key Visual:
Based on the light novels by Fuse, That Time I Got Reincarnated as a Slime, Crunchyroll offers streaming for every preceding season of “That Time I Got Reincarnated as a Slime,” along with the Scarlet Bond movie and the newly released Visions of Coleus OVA, available in both subtitled and dubbed versions.
Crunchyroll describe the fourth season as follows:
Demon Lord Rimuru’s dream of creating an alliance between humans and monsters takes a step closer to being realized. As Tempest continues to prosper, Granville Rozzo and his granddaughter, Maribel Rozzo, clash with Demon Lord Rimuru over their plan to protect mankind by ruling over them. Meanwhile, in El Dorado, Demon Lord Leon works toward goals of his own. The awakening of a new Hero draws near!
Source: @ten_sura_anime
© Taiki Kawakami, Fuse, KODANSHA/“Ten-Sura” Project
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