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TOKYO, JAPAN – In a move that has sent ripples of excitement through the anime and manga communities, production powerhouse Kadokawa has officially announced a television anime adaptation of Tohru Himuka’s acclaimed fantasy manga, Gekkakoku Kiiden, also known internationally as The Eccentric Doctor of the Moon Flower Kingdom. The revelation, made on Friday, comes with a wealth of exciting details, including the unveiling of the main voice cast, the creative team steering the project, a captivating teaser promotional video, and a celebratory illustration that offers a tantalizing glimpse into the series’ aesthetic.
This announcement marks a significant milestone for Gekkakoku Kiiden, a series that has steadily garnered a dedicated fanbase since its debut. The transition from beloved manga to animated series promises to bring the intricate world and compelling characters of the Moon Flower Kingdom to life for a wider audience.
Unveiling the Talent Behind the Kingdom: Main Cast and Staff Revealed
The heart of any anime adaptation lies in its cast and the creative minds that shape its visual and auditory landscape. Kadokawa has assembled a roster of talented individuals to bring Gekkakoku Kiiden to the screen.
Leading the cast is Rina Hidaka, a versatile voice actress renowned for her roles in popular series such as The Rising of the Shield Hero (Tate no Yuusha no Nariagari), who will lend her voice to the enigmatic protagonist, Koyou. Hidaka’s ability to portray characters with both strength and vulnerability makes her an inspired choice to embody Koyou’s unique blend of medical prowess and youthful charm.
Joining her is Takeo Ootsuka, who has recently captivated audiences with his performance in [Oshi No Ko], taking on the role of Keiun. Ootsuka’s dynamic range is well-suited to portraying the young prince’s journey of discovery and his growing entanglement with Koyou’s extraordinary world.
The supporting cast also boasts impressive talent. Taito Ban, known for his work in The Vile-Blooded Princess and the Blood-Bound Duke (Akujiki Reijou to Kyouketsu Koushaku), will voice Shingdam, adding another layer of intrigue to the unfolding narrative. Furthermore, Shouya Chiba, a familiar voice from Blue Box (Ao no Hako), is set to portray Jiei, promising a nuanced performance that will undoubtedly flesh out the character’s role within the story.
The directorial reins have been placed in the capable hands of Kouichirou Kuroda, who previously served as an episode director on That Person Obviously Reincarnated as a Hero (Party kara Tsuihou sareta Sono Chiyushi, Jitsu wa Saikyou ni Tsuki). Kuroda’s experience in crafting compelling individual episodes suggests a keen eye for pacing and character development, crucial elements for translating a manga’s narrative arc.
Guiding the overarching narrative is Aki Mizuki, who will serve as the series composer. Mizuki’s prior work on Sorairo Utility, where they contributed scripts, indicates an understanding of crafting cohesive and engaging storylines.
Character design will be handled by Akira Ono, whose previous role as chief animation director on My Awkward Senpai. (Bukiyou na Senpai.) suggests a talent for capturing the distinct visual appeal of characters. This is particularly important for a shoujo manga where character design plays a vital role in conveying emotion and personality.
The sonic landscape of the anime will be meticulously crafted by Hozumi Gouda, a seasoned sound director with an extensive resume, including his work on the iconic Gintama (3-nen Z-gumi Ginpachi-sensei). His expertise promises to imbue the world of Gekkakoku Kiiden with immersive and impactful sound design.
The musical score will be composed by Shiho Terada, who has contributed to projects like Getter Robo Arc, suggesting a potential for dynamic and memorable musical themes that will enhance the anime’s emotional resonance. Music production will be handled by HIGHWAY STAR, a company known for its contributions to the anime industry.
The animation itself will be brought to life by Studio Elle, a studio that has been steadily building its reputation with its contributions to various anime productions. Their involvement signals a commitment to delivering a visually polished and engaging animated experience.
A Journey Through Time: The Manga’s Genesis and Growth
The announcement of the anime adaptation is the culmination of a journey that began in January 2018 when Tohru Himuka first launched Gekkakoku Kiiden in Kadokawa’s Asuka magazine. The fantasy manga has since blossomed into a beloved series, captivating readers with its unique blend of medical intrigue, historical fantasy, and burgeoning romance.
The manga’s popularity is underscored by its impressive sales figures. As of November 2025, Kadokawa had published the 14th volume of the series, with the 15th volume eagerly anticipated on May 22. Collectively, Gekkakoku Kiiden boasts a staggering cumulative circulation of 3.5 million copies, a testament to its widespread appeal and enduring readership.
The series’ global reach has also been significantly expanded thanks to international licensing. Seven Seas Entertainment, a prominent publisher of manga and light novels, licensed the manga in English in July 2022. This move allowed a broader international audience to experience the charms of the Moon Flower Kingdom. Seven Seas Entertainment published the 12th volume in December 2025, with the 13th volume scheduled for release on June 23, ensuring that English-speaking fans can keep pace with the ongoing narrative.
A World of Mystery and Medicine: Unpacking the Synopsis
At its core, Gekkakoku Kiiden transports audiences to the "faraway lands of the Moon Flower Kingdom," a realm where traditional healing methods are deeply intertwined with superstition, often yielding unreliable results. The narrative centers on the young Prince Keiun, who embarks on a quest for more effective remedies. His journey takes an unexpected and dramatic turn when his entourage is ambushed by mysterious assailants.
In the ensuing chaos, Prince Keiun witnesses a life-saving procedure unlike anything he has ever seen, an experience that profoundly shakes him. The individual responsible for this remarkable medical feat is none other than Koyou, a beautiful yet decidedly peculiar teenage girl. This encounter sparks a cascade of questions: Who is Koyou, and why is the prince the target of assassins?
The synopsis promises a rich tapestry of interwoven plot threads, including "shadowy conspiracies, medical intrigue, and romance." This multifaceted approach suggests a story that will appeal to a wide range of viewers, offering not only thrilling plot developments but also exploring the complexities of human connection and the pursuit of knowledge. The "beautifully illustrated shoujo manga" descriptor further hints at the visual artistry that has captivated its readers, and which fans will undoubtedly anticipate in its animated form.
A Glimpse into the Animated Realm: The Teaser PV
Adding to the anticipation, Kadokawa has released a teaser promotional video for the anime adaptation. This short but evocative trailer offers a first look at the animation style, character designs brought to life, and hints at the atmospheric tone of the series. While specific plot points are not revealed, the PV serves as a powerful invitation to the world of Gekkakoku Kiiden, whetting the appetite of both existing fans and potential newcomers. The visual style, coupled with the carefully chosen music and sound effects, aims to capture the essence of the manga’s charm and the dramatic potential of its storyline.
The official X (formerly Twitter) account for the anime project, @gekkakoku_pj, has also been launched, providing a dedicated platform for fans to stay updated on the latest news, behind-the-scenes glimpses, and release information. This direct line of communication with the production team is a valuable asset for fostering community engagement and building excitement leading up to the anime’s premiere.
Implications and Expectations: What the Future Holds
The announcement of a Gekkakoku Kiiden anime adaptation is more than just the creation of a new series; it signifies a recognition of the manga’s artistic merit and commercial success. For Kadokawa, this project represents an opportunity to leverage a proven property and introduce it to a global audience through the highly influential medium of anime.
The success of this adaptation could have broader implications for the fantasy and shoujo genres within the anime landscape. A well-executed Gekkakoku Kiiden anime could pave the way for more niche or character-driven fantasy narratives to receive animated treatment, further diversifying the anime offerings available to viewers.
Fans of Tohru Himuka’s work have long envisioned this series brought to animated life, and the revealed cast and staff suggest that their expectations are in good hands. The combination of established voice actors, experienced directors, and a dedicated studio creates a strong foundation for a faithful and engaging adaptation. The coming months will undoubtedly be filled with further updates as production progresses, and the anticipation for the premiere of The Eccentric Doctor of the Moon Flower Kingdom continues to build. The journey from the pages of Asuka magazine to the television screen is poised to be a captivating one.
Lina Irawan
Siti Muinah
