Satoshi Mizukami’s Spirit Circle Anime Adaptation Confirms December 2026 Premiere

Global distributor REMOW has officially announced that Spirit Circle, the celebrated manga series created by Satoshi Mizukami, is being adapted into an 18-episode television anime series scheduled to premiere in December 2026. Alongside the announcement, the production team released an official teaser trailer and promotional visual, highlighting the ending theme song titled “No Matter the World” (Koko ga Donna Sekai Demo), performed by voice artist and singer Anna Nagase.

For official updates and media releases, visit the official REMOW website.

Production Staff and Director Tatsuo Satō’s Final Work

The upcoming anime adaptation is a collaborative production between animation studios NAGOMI and EOTA.

The project was directed by veteran anime filmmaker Tatsuo Satō, known for his work on acclaimed sci-fi and action series such as Martian Successor Nadesico, Stellvia, and Atom The Beginning. Satō passed away in April 2026, and final production duties on the series were completed under the guidance of assistant director Kentaro Mizuno (Cardfight!! Vanguard overDress, Wistoria: Wand and Sword).

• Original Creator: Satoshi Mizukami
• Animation Studios: NAGOMI, EOTA
• Director: Tatsuo Satō (Completed by Kentaro Mizuno)
• Character Design: Satoru Fujimoto
• Ending Theme: “No Matter the World” by Anna Nagase
• Distribution: REMOW

Character designs for the adaptation are handled by Satoru Fujimoto, translating Mizukami’s distinct illustrative style into animation.

Main Voice Cast and Characters

REMOW confirmed the primary voice cast leading the supernatural drama:

• Fuuta Okeya: Kazuki Ura
• Kouko Ishigami: Anna Nagase
• Rune: Eri Yukimura
• East: Yūichi Nakamura

Leading man Kazuki Ura brings prior breakout experience from roles like Isagi Yoichi in Blue Lock, while veteran voice actor Yūichi Nakamura steps into the role of East.

Manga Origins and Reincarnation Premise

Created by manga author Satoshi Mizukami—best known for Lucifer and the Biscuit Hammer (Planet With)—Spirit Circle originally ran in Shōnen Gahōsha’s Young King OURs magazine from May 2012 to March 2016 across six collected volumes.

The narrative explores complex themes of fate, karma, and reincarnation across multiple historical epochs:

• The Protagonist: Fuuta Okeya is an ordinary-seeming middle school student who possesses the unique ability to see spirits wandering the physical world.
• The Encounter: Fuuta’s everyday life is upended upon meeting Kouko Ishigami, a mysterious transfer student who confronts him with a chilling declaration: “I will destroy your soul and break the cycle of reincarnation.”
• Past Lives: Kouko reveals that she and Fuuta share a deep, turbulent karmic connection spanning several past lives. To understand why she seeks revenge and why their souls are locked in eternal conflict, Fuuta must traverse time and space across ancient civilizations and distant futures, uncovering dark truths buried in their shared history.

Frequently Asked Questions (FAQ)

When does the Spirit Circle anime premiere?

The 18-episode Spirit Circle anime series is scheduled to premiere globally in December 2026.

Who is producing the Spirit Circle anime?

The anime is animated by NAGOMI and EOTA, with distribution managed by REMOW.

What is the plot of Spirit Circle?

The story follows Fuuta Okeya, a boy who can see spirits, and Kouko Ishigami, a transfer student who believes they share a vengeful karmic connection spanning multiple past lives and reincarnation cycles.

Who wrote the original manga?

Spirit Circle was written and illustrated by Satoshi Mizukami, running in Young King OURs from 2012 to 2016.