The Apothecary Diaries Season 3 launches puzzle campaign and bookstore fair
- A new puzzle campaign titled "#猫猫謎謎" launched alongside the broadcast of The Apothecary Diaries Season 3, presenting riddles related to the series.
- Shogakukan is holding a bookstore fair starting 1 October, offering a special shelf display clear POP for "薬屋のひとりごと~猫猫の後宮謎解き手帳~".
- Prime Video featured Season 3 as an October release title, as attention grows for the series ahead of an upcoming film.