The Apothecary Diaries season 3 premieres October 2, 2026, confirmed by a full trailer Toho Animation released on Saturday, August 15. Yorushika performs the opening theme, Reina Ueda joins as the “immortal maiden” Bai Niangniang, and the trailer points at a famine storyline.
What The Apothecary Diaries season 3 trailer confirmed
| Detail | Confirmed |
|---|---|
| Premiere | Friday, October 2, 2026 |
| Opening theme | “Kumo wo Nuke Kazashita e Watashi Dake” by Yorushika |
| New cast | Reina Ueda as Bai Niangniang |
| Story hook | A looming famine tied to the legend of an immortal maiden |
| Also revealed | New key visual and main trailer |
An immortal maiden, and what that probably means
Reina Ueda’s Bai Niangniang is described as a mysterious figure who has become the subject of rumours — an “immortal maiden” — and the trailer ties her to a coming famine.
That combination is worth flagging, because it is exactly the shape every good Apothecary Diaries arc takes. This is a series that repeatedly presents a supernatural-sounding problem — a cursed consort, a haunted pavilion, an infant wasting away — and then has Maomao dismantle it with pharmacology. The first season’s most famous case turned a curse on the emperor’s children into lead poisoning from white face powder. A rumoured immortal woman appearing just as the harvest fails is not a fantasy pivot. It is a setup for Maomao to explain what is actually in the food supply.
If the show holds to its own pattern, expect ergotism, a contaminated grain store, or a hoarding scheme dressed up as divine punishment — and expect the court to prefer the divine explanation right up until Maomao makes it impossible.
Yorushika on the opening is a notable get
Yorushika — the duo of n-buna and suis — are one of the most in-demand acts in Japanese music for anime openings, and their sound is literary and melancholic rather than the shonen-anthem mode. Handing them The Apothecary Diaries, a period mystery about a poisons expert working in a palace she does not want to be in, is a good match on paper.
It also signals where Toho Animation thinks this series sits. Apothecary Diaries is not a battle show and it does not chase the shonen demographic that dominates seasonal charts. It is a slow, dialogue-heavy period mystery that nonetheless earned two full 24-episode seasons and a third, which is a rare trajectory for a non-action title. The opening act reflects the audience that got it there.
Where season 3 picks up
Season 2 ended having escalated the political stakes considerably: Maomao’s parentage, Jinshi’s real position at court and the succession question all stopped being background. The trailer’s famine framing suggests season 3 moves outward from palace intrigue toward the empire that palace governs — which is the direction the source novels take.
A word of caution on episode counts: neither Toho nor the official site has confirmed how many episodes season 3 runs. Seasons 1 and 2 were both 24 episodes, so 24 is the reasonable expectation — but nothing announced so far confirms it, and no reputable outlet has reported a number. Treat any figure you see quoted this week as a guess.
How to catch up before October 2
Both previous seasons are available on Crunchyroll, which streamed them simulcast. That is 48 episodes total, and unusually for a mystery series, very little of it is skippable — the show plants details several arcs before it uses them.
If you want the wider autumn picture, our Fall 2026 anime lineup tracks every confirmed premiere date. And if the food-and-poison angle is the appeal, our best food anime list covers the neighbouring genre.
Frequently Asked Questions
When does The Apothecary Diaries season 3 come out?
Friday, October 2, 2026. Toho Animation confirmed the date with a full trailer and key visual published on August 15, 2026.
Who sings the season 3 opening?
Yorushika. The opening theme is titled “Kumo wo Nuke Kazashita e Watashi Dake.”
Who is Bai Niangniang?
A new character voiced by Reina Ueda, described as a mysterious “immortal maiden” who has become the subject of rumours at court. The season 3 trailer connects her to a looming famine.
How many episodes is season 3?
Not confirmed. Neither Toho Animation nor the official site has announced an episode count as of August 16, 2026. Seasons 1 and 2 were both 24 episodes, so 24 is the reasonable expectation, but no figure has been confirmed.
Where can I watch the earlier seasons?
Seasons 1 and 2 stream on Crunchyroll, which carried both as simulcasts.
Sources: Toho Animation’s season 3 trailer and key visual, with reporting from Anime News Network and Anime Corner.
