Spirit Circle TV Anime Starts in December with 18 Episodes; Tatsuo Sato's Final Directorial Work

A TV anime of Satoshi Mizukami's manga Spirit Circle (published by Shonen Gahosha) will begin broadcasting and streaming in December 2026. The official site announced the adaptation on November 5 and released the first PV, a teaser visual, and the cast and staff. The broadcasters, streaming services and start date have not been announced.

The official site says director and series composer Tatsuo Sato died in April 2026 and that this is his final directorial work. After his death, production continued under assistant director Kentaro Mizuno, carrying on Sato's intentions, and the series was completed. It runs 18 episodes, as stated in Mizuno's comment. Mizukami describes the story as one that travels through seven lives set in different eras and places.

Kazuki Ura plays Futa Okeya, Anna Nagase plays Kouko Ishigami, Eri Yukimura plays Lun, and Yuichi Nakamura plays East. According to the cast list on the official site, Ura and Nagase also voice the past lives of Futa and Kouko. Satoru Fujimoto designs the characters, and NAGOMI × EOTA produces the animation. The ending theme is "Koko ga Donna Sekai demo," sung by Nagase, her first solo song.

The story begins when Futa, a middle schooler who can see ghosts, is told by transfer student Kouko about a bond between them from a past life. To learn why she wants him dead, Futa sets out on a journey through his own past lives, from ancient times to the future.