The official website for the live-action adaptation of Yumi Tamura’s manga “Don’t Call It Mystery” (also known as “Mystery to Iu Nakare” or “Do Not Say Mystery”) recently unveiled an exciting new trailer and a captivating banner visual for the upcoming film.

The trailer offers a sneak peek into the movie’s thrilling narrative and showcases the theme song, “Garasu Mado” (Glass Window), performed by King Gnu.
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The cast members include:
- Kou Shibasaki as Yura Akamine
- Kōhei Matsushita as Asaharu Rumazaka
- Eita Nagayama as Garo Inudō
- Nanoka Hara as Shioji Kariatsumari
- Keita Machida as Rikinosuke Kariatsumari
- Riku Hagiwara as Neo Hahakabe
- Sairi Itō as Seiko Furomitsu
- Matsuya Onoue as Yūto Ikemoto
- Michitaka Tsutsui as Nariaki Aoto
Scheduled to release on September 15, the film will primarily focus on the manga’s compelling “Hiroshima Arc” featured in volumes two to four. This arc follows the journey of protagonist Totonō Kunō as he embarks on a trip to Hiroshima, becoming entangled in a fierce battle over the Kariatsumari family’s inheritance.
Masaki Suda, who previously portrayed Totonō Kunō in the live-action series, will reprise his role in the film adaptation. Furthermore, the creative team behind the series, including director Hiroaki Matsuyama, scriptwriter Tomoko Aizawa, and music composer Ken Arai, will also return to lend their expertise.
“Don’t Call It Mystery” revolves around Totonō Kunō, a college student with a knack for solving mysteries. The story commences with his unjust arrest by the police on suspicion of murdering a classmate.

Before commencing the full serialization of the manga in November 2017, Tamura published a one-shot in Monthly Flowers in November 2016. In recognition of its excellence, Kodansha honored the manga with an award during the 44th annual Manga Awards in April 2020. Additionally, “Don’t Call It Mystery” was nominated for the 13th Manga Taisho Awards in January 2020.
Seven Seas Entertainment has licensed the manga and published the first 2-in-1 omnibus volume on May 30.
The live-action series adaptation of the manga premiered on Fuji TV in January 2022.
Tamura gained recognition for her 35-volume series “7SEEDS,” which debuted in Bessatsu Shōjo Comic magazine in 2001 and concluded in July 2017. The manga received the Shōjo Category award at the 52nd Annual Shogakukan Manga Awards in 2007. “7SEEDS” served as the inspiration for two anime series that premiered on Netflix in June 2019 and June 2020.
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From 1990 to 1998, Tamura’s 27-volume “Basara” manga captivated readers in Bessatsu Shōjo Comic. Viz Media published the English version of the manga from 2003 to 2008. The manga’s popularity led to the creation of the 13-episode “Legend of Basara” anime series in 1998. Tamura also authored “Chicago,” a two-volume manga published by Viz Media from 2002 to 2003, and “Wild Com,” a one-volume manga released in 2004.
Tamura’s “Tomoe ga Yuku!” manga inspired an original video anime (OVA) series that aired from 1991 to 1992.
Sources | Live-action Don’t Call It Mystery film’s website, Comic Natalie