REMOW announced on Thursday that Spirit Circle, the manga by Satoshi Mizukami, will receive an 18-episode television anime adaptation airing in Japan and streaming globally in December. The announcement came alongside a teaser promotional video, a teaser visual, and reveals of the main cast and staff.
Theme Song & Cast
The teaser video previews the ending theme “No Matter the World” (Koko ga Donna Sekai Demo), performed by Anna Nagase and written specifically for the series.
The main voice cast is as follows:
- Kazuki Ura as Fuuta Okeya
- Anna Nagase as Kouko Ishigami
- Eri Yukimura as Rune
- Yūichi Nakamura as East
Staff
The anime was directed by the late Tatsuo Satō (Martian Successor Nadesico, Stellvia, Atom The Beginning), marking his final directorial work at studios NAGOMI and EOTA. Satō also handled the series scripts. Following his passing, production was completed under assistant director Kentaro Mizuno, known for his episode director work on Cardfight!! Vanguard overDress, Yu-Gi-Oh! Go Rush!!, and Wistoria: Wand and Sword. Satoru Fujimoto is designing the characters, and TWIN ENGINE is producing the anime.
Story
Fuuta Okeya is a middle school student who can see spirits. His life is upended when he encounters Kouko Ishigami, a mysterious transfer student who declares: “I’ll destroy your soul and break the cycle of reincarnation.” Kouko reveals that the two share a fateful bond stretching across their past lives. Determined to uncover the truth behind her vendetta, Fuuta embarks on an extraordinary journey through time and space — from the ancient past to the far future. When all the secrets are finally laid bare, will their intertwined destinies lead to destruction… or salvation?
About the Manga
Mizukami serialized Spirit Circle in Shōnengahōsha’s Young King Ours from May 2012 until 2016, concluding with six compiled volumes, the last of which shipped in June. Crunchyroll began simultaneous digital publication in 2014, and Seven Seas Entertainment released the series in print in English.
Mizukami is also known for The Lucifer and Biscuit Hammer, which was adapted into an anime in 2022, and Sengoku Youko, which received a three-cour anime adaptation in 2024.

