After concluding the opening ceremony of the Demon Kingdom Federation Tempest, Rimuru and his companions are invited by the Celestial Emperor Hermesia of the great elven nation – the Magi Dynasty Salion – to visit her private resort island. As the group enjoys their brief vacation, a mysterious woman named Yura appears. A new incident unfolds against the backdrop of the boundless azure sea.
Takahiro Sakurai , Sayaka Ohara , Ayako Kawasumi , Hisako Kanemoto , Hochu Otsuka , Koji Yusa , Rie Tanaka , Tomoaki Maeno , Rina Hidaka , Megumi Toyoguchi , Takuya Eguchi , 17 more , Makoto Furukawa , Manami Numakura , Mao Ichimichi , Lynn , Sayaka Senbongi , Jun Fukushima , Ryuichi Kijima , Chikahiro Kobayashi , Kengo Takanashi , Miho Okasaki , Saori Onishi , Koichi Domoto ,
