I'll be seeing the new Detective Conan film of course, but I guess I also have to see that sheep detective film too in the spring...
The year: 1810. Location: The entertainment district Kobikicho (current-day Ginza) in the great, bustling metropolis of Edo (Tokyo). Behold, the Morita-za, a popular kabuki theater that on one cold winter night, is holding its last performance of a popular play. As the audience slowly leave the theater, their eyes fall on the infamous Sakubei, a ruffian who has become somewhat of a known face in the district due to his frequent appearances in the gamble houses. He seems interested in a beautiful women dressed in a gorgeous red kimono, and follows her to the empty lot next to the theater... but then the figure turns around, revealing himself to be a young handsome man: he loudly announces himself as Inou Kikunosuke, son of Inou Seizaemon, retainer of the Tooyama Clan in the Land of Minou. He declares he's here to take revenge for his father, who was slain by his own servant samurai Sakubei, who then fled to Edo. The audience coming out of the kabuki theater next door are getting a new bloody show for free, with hundreds of onlookers. The duel becomes the stuff of legends: while Kikunosuke's skills with the sword are splendid for his age and he quickly manages to wound Sakubei several times, Sakubei possesses monstrous strength, allowing him to overcome such injuries and pushing straight through Kikunosuke's attacks, resulting in a surprisingly even match. Eventually, the two duelists stumble into an empty shed, with the duel continuing outside the view of the audience. A horrible cry follows and out of the shed comes... Kikunosuke, his garments bathed in red and in his hand, he holds... the cut-off head of Sakubei. He announces he has avenged his father's murder and continues to report this warranted act of avenge, approved by the warrior code, to the local magistrate's office and to the representatives of the Land of Minou in Edo. Having fulfilled his mission, he returns to his home.
One year later, the ronin (masterless samurai) Kase Souichirou arrives at the Morita-za theater. He was once a top-ranking samurai serving under Inou Seizaemon, and his sister is to marry Kikunosuke. Kase has travelled to Edo, for while he knows the legendary story of how Kikunosuke slayed Sakubei and avenged his master, he... just can't believe it all happened like that. He learns Kikunosuke actually lived and worked at the Morita-za theater for six months while he was staying in Edo: Kikunosuke had followed Sakubei's trail to Edo, and because the head writer of the Morita-za theater knew his mother, he was allowed to stay and work at the theater while he continued his hunt for Sakubei in the great city of Edo. Kase starts interviewing people who knew Kikunosuke during his time at the theater and who witnessed the fight. They all confirm the stories that go around about the fight, but Kase still can't shake away questions, like how Kikunosuke, the young gentle man he knew so well, could ever commit such a cold-blooded act as actually killing and decapitating Sakubei, a man who may have killed his father, but who was also a person he had known since he was a child. Kase also wonders why Kikunosuke dressed up as an onna-gata (a male actor playing a woman in kabuki) before his duel to the death with Sakubei, and why Kikunosuke, after his return to his home domain, refuses to tell more about his fight with Sakubei. The more Kase starts digging into the legendary fight one year ago however, he starts to see how things don't quite add up in the 2026 film Kobiki-chou no Adauchi ("Vengeance in Kobiki-Chou"), of which the official English title appears to be Samurai Vengeance.Kobiki-chou no Adauchi is a film released in February 2026, based on the 2023 book with the same title by Nagai Sayako. The book, originally serialized between 2019-2021 won two prestigious literary awards, the Naoki Prize and the Yamamoto Shuugorou Prize, but was also well received also among mystery/suspense/crime readers, as the book secured top ten positions in the Bunshun Mystery Best 10, Kono Mystery ga Sugoi and Mystery ga Yomitai rankings. The book hadn't really been on my radar to be honest, but the trailer of the film looked really cool: I first thought it was just a historical action film, as it showed the duel between Kikunosuke and Sakubei, but then we learn it's actually about an investigation into the duel, and I was actually imagining it'd be something like Rashomon, with all the accounts of the various witnesses not quite adding up or something like that. It wasn't like that by the way, and that's of course not the fault of the film itself, but yeah, don't go in expecting Rashomon.
What you can expect is a rather amusing film, both in the sense of comedy and simply being captivating. Kase is a seemingly simple warrior without master from the countryside, who is travelling to learn more about his future-brother-in-law and the legendary duel he had in the great city of Edo. But as he listens to the stories of each witness, he shows himself to be a lot cleverer than he appears, asking sharp questions that slowly undermine the legend. The people he interviews, all of them connected to the kabuki theater as they lived with Kikunosuke for half a year, are very colorful and provide quite some comedy as they interact with Kase, from a talkative and friendly barker who was great friends with Kikunosuke during his time at the theater to an aged onnagata who still seems mesmerized by how gracefully Kikunosuke looked as he entered the fight to avenge his father. These witnesses all focus on different aspects of the fight and their own interactions with Kikunosuke, giving a lot of depth to both their characters and that of Kikunosuke, who we never see "in real time" after the fight, only in flashbacks as everyone reflects on what happened that night and the events that led up to it. There is for example the swordmaster who teaches the actors how to handle weapons during a play who turns out to have actual military experience, so he taught Kikunosuke, aware of his mission to avenge his father, and we get an idea of how driven Kikunosuke was through his eyes.
While the book did manage to rank into several mystery rankings when it released, and the film itself is also touted as a mix of the historical, human drama and mystery genres however, I would say they did downplay the mystery aspect of the story a bit, or at least, perhaps it was like this in the original novel too, but it focuses a bit more on the historical and human drama aspects, giving us an idea of life in the entertainment district in 1800 Edo. Which is alright on its own, but man, this story could have been presented as a much more solid mystery film with very few changes. It just decided to put the accent on different aspects of the (still interesting) story, making it easier for both Kase and the viewer to digest and make the connections. With just a bit more tweaks like requiring Kase to figure out more small contradictions or incongruities in each witness account, the film would have been definitely a more solid mystery film. A more Rashomon-esque approach could also have been cool, though a bit more difficult to pull with this story perhaps. Because the film puts its weight more on the human drama aspect, the moment when Kase realizes the real truth that was hidden behind Kikunosuke's duel comes surprisingly soon in the film, with the remainder more focused on seeing that truth's effect on those involved. It's not a long film though and I do think the payoff is good, but this is definitely a film I could imagine as a much tighter mystery story very easily and personally, I would have probably like that better, but I'd say the film as it is now will appeal to a much wider audience, and I still did enjoy the film.
Kobiki-chou no Adauchi is basically a borderline case of what I usually discuss here on this blog: it can definitely be seen as a mystery story, but tbe way the film was shot and written, I wouldn't describe it firstly asa a mystery story. It does have enough elements of the mystery genre to at least understand why it'd rank into several mystery-related rankings in Japan when the book was first released, and the film is definitely entertaining enough overall, so in this case, I can accept the mystery atmosphere being downplayed a bit to allow for a film that appeals to a wider audience. I had a fun time with the film despite being somewhat disappointed it wasn't presented as a pure mystery story, which means it did pretty well, if you think about it: being good enough to help compensate for my initial disappointment!

















