Some anime announcements are exciting. Some are emotional. And then there are the rare ones that are both — and Spirit Circle just delivered one of those. REMOW has announced an 18-episode TV anime adaptation of Satoshi Mizukami's beloved manga, set to air in Japan and stream globally in December 2026. A teaser visual and the first teaser trailer dropped with the announcement.
Here is the story. Fuuta Okeya is a middle school student who can see spirits — a gift that mostly makes his life weird. Then a mysterious transfer student named Kouko Ishigami shows up and tries to kill him, declaring she will destroy his soul and break the cycle of reincarnation. The reason? A connection between the two that stretches back through their past lives. Using the mysterious Spirit Circle, a device that lets him relive his previous lives, Fuuta journeys through seven different lives across seven eras — from ancient civilizations to the far future — clashing with Kouko again and again as the truth slowly comes into focus.
What makes this adaptation truly special is the name behind it. The series was directed by Tatsuo Sato — the legendary director of Martian Successor Nadesico, Stellvia, and Bodacious Space Pirates — who also handled series composition. Spirit Circle is his final directorial work: Sato passed away in April 2026, and production was completed under assistant director Kentaro Mizuno, with the team carrying forward his vision. Animation comes from studios NAGOMI and EOTA, produced by Twin Engine, with character designs by Satoru Fujimoto.
The cast is stacked, too:
- Kazuki Ura (Blue Lock's Yoichi Isagi) as Fuuta Okeya
- Anna Nagase (Jujutsu Kaisen's Riko Amanai) as Kouko Ishigami
- Eri Yukimura as Rune
- Yuichi Nakamura (Jujutsu Kaisen's Satoru Gojo) as East
Nagase also performs the ending theme, "Koko ga Donna Sekai demo" ("No Matter the World") — her first solo song, with lyrics by UiNA and composition and arrangement by Tatsuya Kato.
Mizukami — also the creator of Lucifer and the Biscuit Hammer and Sengoku Youko — called the story a challenge to adapt, with seven times the usual worldbuilding and an episode count longer than one cour but shorter than two. The manga, serialized from 2012 to 2016 and published in English by Seven Seas Entertainment, marks the 10th anniversary of its conclusion with this adaptation. An exact premiere date, broadcasters, and streaming platforms have not been announced yet, so December is right around the corner, and this one deserves a spot at the top of your watchlist.
Sources: Anime News Network and The Otaku's Study.
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