Following the success of the Tempest Founder’s Festival, Rimuru Tempest’s nation continues to expand and flourish, with the newly constructed dungeon becoming a major attraction for adventurers and monsters alike. As Rimuru looks ahead, he faces new challenges in governing his growing federation, managing diplomatic relations with neighboring nations, and confronting emerging threats from powerful adversaries. Season 4 adapts an unprecedented five cours of content, continuing Rimuru’s journey as he builds his monster nation, strengthens alliances, and prepares for conflicts that will test both his leadership and his immense powers as a slime demon lord.

Title: That Time I Got Reincarnated as a Slime (Tensei Shitara Slime Datta Ken) – Season 4
Year: 2018–Present
Type: TV Anime Series
Country: Japan
Language: Japanese
Director: Naokatsu Tsuda
Writer: Kazuyuki Fudeyasu (Series Composition), Fuse (Light Novel Creator), Mitz Vah (Manga Creator)
Producers: 8bit (Animation Studio), Bandai Namco Filmworks, Kodansha, Micro Magazine Publishing
Genre: Isekai, Fantasy, Action, Adventure, Comedy, Supernatural
Stars: Miho Okasaki (Rimuru Tempest), Megumi Toyoguchi (Shion), Makoto Furukawa (Benimaru), Tomokazu Sugita (Ranga), Sayaka Senbongi (Shuna), Yoshitsugu Matsuoka (Hakuro), Takuya Eguchi (Souei), Chikahiro Kobayashi (Gobta), Yuko Kaida (Milim Nava), Daisuke Namikawa (Clayman), Kenjiro Tsuda (Veldora), Nao Toyonaga (Rimuru’s human form)