What Is the Plot of The Apothecary Diaries: The Deceased Empress’ Treasure?

Global entertainment powerhouse TOHO Animation and co-producing studio OLM have announced that a brand-new animated feature film, The Apothecary Diaries: The Deceased Empress’ Treasure, will premiere in theaters on December 11, 2026. This cinematic installment features an entirely original narrative crafted by light novel creator Natsu Hyuuga. The theatrical debut is strategically positioned to launch directly in the middle of the upcoming third season of the television series, offering fans a high-stakes standalone mystery on the grandest scale possible.

The Apothecary Diaries Movie Essential Project Details

• Game/Anime Title: The Apothecary Diaries: The Deceased Empress’ Treasure (Kusuriya no Hitorigoto: Bо̄hi no Hihо̄)
• Animation Production: TOHO Animation Studio, OLM Studio
• Primary Genre: Historical Drama, Mystery, Medical Fiction
• Manga Publishers: Square Enix via Big Gangan, Shogakukan via Sunday Gene-X
• Official Japanese Anime Hub: The Apothecary Diaries Official Portal
• Official Production Communications: @kusuriya_PR on X

What Is the Broadcast Schedule for The Apothecary Diaries Season 3?

The upcoming feature film will function as a narrative bridge during an incredibly ambitious television release window. The Apothecary Diaries Season 3 has been split into two distinct split-quarter courses, organized as follows:

• Season 3, Part 1: Premiering in October 2026 as part of the autumn broadcasting block.
• The Theatrical Feature Film: Launching on December 11, 2026, to serve as a cinematic climax during the mid-season winter intermission.
• Season 3, Part 2: Premiering in Spring 2027 to wrap up the seasonal light novel story arcs.

This massive release strategy capitalizes on the global momentum generated by the 24 episode first season in late 2023 and the successful second season in January 2025.

What Is the Plot of The Deceased Empress’ Treasure Film?

The original screenplay follows the clever young apothecary Maomao and the influential palace official Jinshi as they depart the claustrophobic confines of the imperial harem. The duo travels directly to the isolated homeland of a high-ranking concubine who passed away under mysterious circumstances five years prior.

Tasked with returning her final remains to her ancestral resting place, Maomao and Jinshi are quickly pulled into a web of localized conspiracies. The journey introduces unique elemental dangers, including aggressive oceanic pirates, long-lost historical riddles, and the dark reality surrounding the deceased Empress’s body. The central puzzle pivots around a secretive young local boy who holds the absolute key to unlocking the true nature of the hidden treasure.

Who Is Part of the Production Staff and Voice Cast?

To guarantee that the film maintains the artistic integrity of the television production, the franchise has retained its elite roster of creative leads and vocal talents:

• Director and Screenwriter Norihiro Naganuma: Acclaimed for his exceptional world building on The Ancient Magus’ Bride, Naganuma returns to direct the film while directly supervising the script layout.
• Character Designer Yukiko Nakatani: Recognized for beautiful artistry on Go! Princess Precure, Nakatani brings Maomao and the nobility to life with refined detail.
• Art Director Katsumi Takao: Famous for his gorgeous environmental work on Pokémon the Movie: Secrets of the Jungle, Takao elevates the new provincial settings.

The complete, beloved ensemble voice cast will voice their respective characters on the silver screen:

• Aoi Yuuki as the eccentric apothecary Maomao
• Takeo Ootsuka as the beautiful administrator Jinshi
• Katsuyuki Konishi as the loyal assistant Gaoshun
• Atsumi Tanezaki as Lady Gyokuyō
• Yui Ishikawa as Lady Lihua

Where Can You Watch and Read The Apothecary Diaries?

The original light novel series, written by Natsu Hyuuga and illustrated by Touko Shino, first launched on the self-publishing platform Shousetsuka ni Narou in October 2011 before transitioning into physical volumes under Shufunotomo. International readers can purchase the translated light novels and access the simultaneous manga adaptations through the Square Enix Manga Store or via digital platforms.

For those looking to stream the anime production, the complete first and second seasons are available with multilingual subtitles and dub options on the Crunchyroll Streaming Service. The platform will also serve as the primary streaming hub for the upcoming third season starting in October 2026.