Huh, I have done more audio drama reviews than I thought... Though it's been a while!
Kitayama Takekuni is a writer strongly associated with the locked room murder mystery and other impossible crimes, and as his nickname of "Kitayama of the physical tricks" implies, he specializes in impossible murder mysteries that rely on a physical trick. And with that, I don't mean a string and needle, but like (hypothethically) houses that rotate or fly around, corpses being shot across a field with a cannon, that kind of thing. Most of the mysteries I have read written by him will feature visual aids like diagrams and floorplans to help the reader visualize the scene, as you often have to think in two, or three dimensions to figure out how the murderer managed to set the scene in such a way. When the murder is being explained at the end of the story, you can often expect an updated diagram with arrows and other additions to explain how a corpse disappeared from scene A and appeared at scene B, or how a Rube Goldberg contraption helped lock the door from the inside.
In that sense, Kitayama Takekuni is basically the last author I'd expected to write an audio drama, precisely because his mysteries often rely on the visual aspect. Of course, he does not exclusively write such mysteries, but it's definitely his trademark style and his strength, and it is hard to imagine how a genuine Kitayama Takekuni mystery would work within the framework of an audio drama.
For Rina has an occult problem. Her family owns a painting which is said to be cursed: the painting depicts a woman, with wet hair and a haze covering the painting, like it's raining or there's mist. A rope-like line can be seen extending upwards from behind her neck, which is why the painting is known online as the hanged woman. The painting belonged to Rina's uncle, but he and his family died three years ago: he and his wife were hanging from a tree in the garden, while their son had been drowned in a puddle just outside the garden, having been hit on the head first. The circumstances seemed to suggest Rina's uncle had decided to commit suicide with the whole family (killing the son first). While the fact Rina's cousin had recently quit his job and was becoming more and more socially isolated had been weighing on her uncle's mind, it seems a weak motive for a forced suicide. The fact her uncle and aunt died in the same way as the painting doesn't help Rina's worries, especially as soon after their death, an image of the painting started to make its rounds on the internet, accompanied by the story it is cursed. Murder however seems ruled out: it had been raining earlier that night, and no foot tracks of outsiders were found in the grounds surrounding the house. Rina hopes Mami can investigate the painting and lift the curse, if there's one. But surprisingly, Mami's method of 'lifting a curse' depends a lot on meticulous investigation and deducing what really happened at the house...
As a mystery story, this is pretty short and while nothing mind-blowing happens here, it's pretty decent. You can tell Kitayama does know he's writing for an audio production with only two actors: the list of characters is fairly limited and there are little "tricks" to make some conversations feel natural, like Mami being too frightened to look at a photograph of the cursed painting, so Rina is forced to explain it verbally to Mami (and to the listener). Which is why it's funny how one of the most important twists in the story is actually visually based, but if this were actually a visual medium, the twist might have been a bit too obvious: while it may have been more fair, the twist does work better having the relevant object being described to the listener, who will then imagine the object as they listen to the drama, and then having the twist sprung upon them. As a mystery, Shiromajutsu Tantei Mashiro Mami is a fairly lite tale, with Mami solving not only the mysterious deaths of Rina's uncle, aunt and cousin, but also the mystery of why there's an urban legend surrounding the painting, but don't come in expecting some of Kitayama's best work here, but it's decent enough. Though I guess, a lot of it does implicitly includes the disclaimer of "within the confines of an audio drama". For at the same time, I can't deny the framework of the audio drama really doesn't allow Takeyama to do what he's best at (impossible crimes based on almost ridiculously grand physical tricks) and the drama isn't very long either (less than a hour). I would have loved to see more of this series, as this feels more like a nice prologue/first story, and you can are left wanting for the "main body".
I also like the two characters a lot: Rina's a lot sharper than she appears at first and certainly not just a gullible high school student, while Mami on the other hand is obviously a clever detective, but can also be very clumsy and she's a bit of a scaredy cat and these two have some really funny interactions. Which is another reason why I'd want to see more of this series: they are set-up as a really entertaining detecting duo and the epilogue of the story also shows the two having becoming close, so you feel more should come.
Shiromajutsu Tantei Mashiro Mami is in no way really a work that allowed Kitayama Takekuni to do what he's best at in terms of mystery writing, but nonetheless, it's an entertaining short mystery that shows potential for more. Though I guess since this originally came out in 2020 and nothing has followed, neither as audio drama nor in any format, I guess this will be all we'll hear from Mami and Rina.
