Cast
Koyo: Rina Hidaka (Tate no Yuusha no Nariagari)
Keiun: Takeo Ootsuka ([Oshi No Ko])
Shingdam: Taito Ban (Akujiki Reijou to Kyouketsu Koushaku)
Jiei: Shouya Chiba (Ao no Hako)
Staff
Director: Kouichirou Kuroda (Party kara Tsuihou sareta Sono Chiyushi, Jitsu wa Saikyou ni Tsuki episode director)
Series Composition: Aki Mizuki (Sorairo Utility script)
Character Design: Akira Ono (Bukiyou na Senpai. chief animation director)
Sound Director: Hozumi Gouda (3-nen Z-gumi Ginpachi-sensei)
Music: Shiho Terada (Getter Robo Arc)
Music Production: HIGHWAY STAR
Studio: Studio Elle
Himuka began drawing the medical fantasy manga in Asuka magazine in January 2018. Kadokawa published the 14th volume in November 2025, with the 15th volume scheduled to be released on May 22. Gekkakoku Kiiden has a cumulative 3.5 million copies in circulation.
Seven Seas Entertainment licensed the manga in English in July 2022 and published the 12th volume in December 2025. The 13th volume is scheduled to be released on June 23.
Synopsis
In the faraway lands of the Moon Flower Kingdom, people have long relied on healing methods shrouded in superstition with dubious results. When the young Prince Keiun goes in search of more reliable remedies, his party is attacked by mysterious assailants, and he ends up witnessing a never-before-seen lifesaving procedure that shocks him to the core. Even more surprising, the one who performs this medical feat is a beautiful, yet slightly odd, teenage girl named Koyou! Just who is this girl, and why is the prince being targeted by assassins? Shadowy conspiracies, medical intrigue, and romance abound in this beautifully illustrated shoujo manga! (Source: Seven Seas Entertainment)
Teaser PV
Official X: @gekkakoku_pj
Source: Comic Natalie
