Live-Action “The Apothecary Diaries”: Who Plays Jinshi? Even the Original Author Gives It Their Seal of Approval as “The Real Jinshi”

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The story

In the popular series “The Apothecary Diaries,” now confirmed for a live-action drama adaptation, Ashida Mana has been cast as the lead, Maomao — but casting for the other central character, Jinshi, has yet to be announced. With only the tidbit that the original author gave the casting a seal of approval as “the real Jinshi,” speculation ran wild on 5ch, with names like Machida Keita, Meguro Ren, and Nomura Kota (Sawamura Ikki’s second son, as reported by the tabloids) all thrown into the ring. The thread also veered into basic questions about why the original series is so beloved, and the story behind the manga version’s move between publishers — all adding up to a mix of anticipation and speculation ahead of the official cast announcement.

September 13, 2026, 13:01

Kusuriya no Hitorigoto (The Apothecary Diaries), the light novel by Natsu Hyuuga that originated on the novel-posting site “Shousetsuka ni Narou,” is getting a live-action drama adaptation. The original series boasts over 57 million copies in cumulative circulation and has already been adapted into a hit TV anime, but this marks its first-ever live-action adaptation. It was also announced that Ashida Mana will play the protagonist, Maomao. Since no cast beyond Ashida has been announced, there’s buzz over who will play the popular character Jinshi.

(Omitted)

Source: mantan-web.jp / Original article here

What people said

3AnonymousSep 13, 2026 18:09
Machida Keita or Meguro Ren
4AnonymousSep 13, 2026 18:10
It's not boring, but I don't get why everyone's pushing it so hard.
Kind of like how I don't get why the Detective Conan movie broke 10 billion yen either.
5AnonymousSep 13, 2026 18:10
Apparently Gaoshun is more popular with women than Lord Jinshi himself.
9AnonymousSep 13, 2026 18:12
The tabloids already leaked that it's Nomura Kota.
10AnonymousSep 13, 2026 18:13
The tabloids reported Nomura Kota (Sawamura Ikki's second son) for the role,

but the fact that Sakurai Takahiro voiced him in the drama CD version is a "dark history" now lol (slang for an embarrassing past best forgotten — a jab at the voice actor's scandal)
12AnonymousSep 13, 2026 18:13
So it means an actor famous enough that even my niece would know him?
Like Okada Masaki or someone?
13AnonymousSep 13, 2026 18:14
I don't think my niece would know who Nomura Kota (Sawamura Ikki's second son) is (´・ω・`)
15AnonymousSep 13, 2026 18:15
Re: #13
He's in Blue Lock too, you know
65AnonymousSep 13, 2026 19:11
Re: #12 Re: #13
You can't just assume he has to be an actor on the "my niece would know him" level.
Maybe it's simply that whoever's playing Jinshi is super handsome, so "my niece kept smiling nonstop" is all that really meant.
71AnonymousSep 13, 2026 19:20
Re: #13
What's this about the niece knowing him?
There's no mention of that anywhere.
You doing okay?
18AnonymousSep 13, 2026 18:17
Re: #17
I was worried about the height gap, but if it's Ashida Mana the balance should work out fine.
22AnonymousSep 13, 2026 18:18
In the original, Maomao's only wearing a wrapped cloth (in a certain scene), so please stay faithful to that.
24AnonymousSep 13, 2026 18:20
If they were younger, Machida or Shizon would work, but they're too old for the part.
25AnonymousSep 13, 2026 18:21
Why does everyone already know about this?
What got people to start reading it in the first place?
27AnonymousSep 13, 2026 18:23
Re: #25
The illustrator got busted for tax evasion, which made it famous nationwide for all the wrong reasons.
30AnonymousSep 13, 2026 18:26
Re: #25
It stayed near the top of the "Shousetsuka ni Narou" rankings for a long time,
the manga sells well,
and the anime was a hit.
32AnonymousSep 13, 2026 18:28
Re: #25
The source material is classic shoujo-manga style, and it caught fire once the anime aired — same pattern as Demon Slayer.
26AnonymousSep 13, 2026 18:21
I Googled Nomura Kota and he looks kind of soft/effeminate,
but I guess that actually suits this character.
39AnonymousSep 13, 2026 18:35
Re: #26
Despite his looks, Jinshi is actually pretty well-trained and even something of a fighter.
31AnonymousSep 13, 2026 18:28
Re: #1
It's gotta be Yamazaki Kento, the usual go-to guy for every live-action adaptation, right? (lol)
38AnonymousSep 13, 2026 18:35
Before it got popular, I remember wondering, "why are there two versions of this manga with different art styles?"

Was it something like one sold well and the other one just ended?
41AnonymousSep 13, 2026 18:37
Re: #38
People distinguish them as "the Enix tax-evasion version" and "the Shogakukan tax-paying version" lol
40AnonymousSep 13, 2026 18:35
Is this the "the original author already gave the seal of approval so don't complain" move?
Even if people say the casting doesn't fit, he should just stand tall and prove them wrong with his acting.
42AnonymousSep 13, 2026 18:37
It's gotta be Takeda Shinji for that role. How many times do you think he's read his own name backwards since he was a kid? (a joke about his name resembling "Jinshi" in reverse)
47AnonymousSep 13, 2026 18:40
Re: #42
Way too old for it —
the character's only 18.
43AnonymousSep 13, 2026 18:39
The author apparently said Jinshi is kind of an unlikable guy —
so is calling someone "the real Jinshi" actually a compliment?
48AnonymousSep 13, 2026 18:44
If only Dean Fujioka were younger…
51AnonymousSep 13, 2026 18:51
Live-action adaptations of popular anime just never work out.
If you're gonna do it, pick something with a minor anime that has no otaku following.
70AnonymousSep 13, 2026 19:17
Re: #51
The Look Back live-action film got huge promotion too,
but I heard almost nobody's actually showing up to see it.
52AnonymousSep 13, 2026 18:54
Where are they even filming this? The Forbidden City?
53AnonymousSep 13, 2026 18:54
Soshina would be fine, right? (a comedian from the duo Shimofuri Myojo) I like Ashida Mana too.
56AnonymousSep 13, 2026 18:56
I'm more curious about who's playing Xiaolan.
63AnonymousSep 13, 2026 19:07
Re: #56
Get a petite, pretty idol to play her.
58AnonymousSep 13, 2026 19:02
Meguro Ren is the only choice, right?
66AnonymousSep 13, 2026 19:14
Re: #58
He's on the Johnny's "Kimutaku" track — he only takes lead roles, no way he'd take this.
69AnonymousSep 13, 2026 19:16
Re: #58
I think that's impossible since he's currently filming in Hollywood —
he won't be back in Japan for a while.
60AnonymousSep 13, 2026 19:06
They've hyped this up so much, I wonder how the cast announcement is even going to land.

Background and Key Points of This Topic

“The Apothecary Diaries” is a hit series that began on “Shousetsuka ni Narou,” with over 57 million copies in cumulative circulation and a hugely successful anime adaptation. This live-action project marks the series’ first such adaptation, and while Ashida Mana has been announced as lead Maomao, the role of the popular character Jinshi remained unannounced as of this writing. The thread floated actor names like Machida Keita and Meguro Ren, while also noting that tabloids had reported Nomura Kota (Sawamura Ikki’s second son) for the part, mixing anticipation with skepticism. The discussion also touched on how the manga adaptation once switched publishers and restarted serialization (due to the illustrator’s tax evasion scandal) — a real, separately reported fact that readers should be careful not to conflate with the Jinshi casting itself. In short, the single phrase “endorsed by the original author” has taken on a life of its own, driving expectations higher and higher even before any cast announcement.

*This article is compiled and summarized from the 5ch (Entertainment & Sports News+) thread “Live-Action “The Apothecary Diaries”: Who Plays Jinshi? Even the Original Author Gives It Their Seal of Approval as “The Real Jinshi”.”

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