Satoshi Mizukami’s reincarnation tragedy is getting the TV treatment. REMOW will air an 18-episode Spirit Circle anime in Japan and stream it globally starting December 2026, Anime News Network reports from Thursday’s announcement.
The series is directed by the late Tatsuo Satō (Martian Successor Nadesico, Stellvia) as his final directorial work at studios NAGOMI and EOTA; Satō also wrote the series scripts. Production was finished under assistant director Kentaro Mizuno, with character designs by Satoru Fujimoto and production by TWIN ENGINE.
Kazuki Ura stars as Fuuta Okeya, with Anna Nagase as Kouko Ishigami, Eri Yukimura as Rune and Yūichi Nakamura as East. Nagase also performs the ending theme “No Matter the World” (Koko ga Donna Sekai Demo), written for the show. The teaser PV is already online.
Mizukami serialized Spirit Circle in Young King Ours from 2012 to 2016; Seven Seas published the manga in English after Crunchyroll’s earlier simulpub. The story follows a middle-schooler who sees spirits and a transfer student determined to destroy his soul across lifetimes.
Manga-to-anime handoffs keep defining the comics-adjacent beat even when creators elsewhere are renegotiating careers, as when Food Wars! artist Shun Saeki ended his exclusive Shueisha contract. Spirit Circle’s December window puts Mizukami beside his earlier Lucifer and Biscuit Hammer and Sengoku Youko adaptations.
Eighteen episodes is a full cour-plus commitment for a completed manga. December 2026 is the premiere season; Satō’s final credit is the bittersweet headline under the cast list.
Finishing a show under an assistant director after the series director’s death is a quiet industry reality audiences rarely see in the marketing. REMOW’s materials put Satō’s name first and Mizuno’s completion credit second — the respectful billing for a final work that still has to hit a broadcast calendar.
Seven Seas readers who already own the English volumes get the rare clean adaptation path: a finished manga, a dated TV window, and a teaser that already carries the ending theme. Global streaming in the same December window is the distribution promise that will decide how wide Spirit Circle travels beyond Japan’s late-night slots.
