Meitantei Conan: Hiiro no Fuzai Shoumei is an anime film that premiered in winter 2021, produced by TMS Entertainment.

About the production: the story comes from a manga, the film runs about 94 minutes and its current status is "finished".

Its main genres are action, comedy, drama and mystery.

On AniList, Meitantei Conan: Hiiro no Fuzai Shoumei has an average score of 71%, a good score, and appears on 2,653 users' lists.

The franchise continues in or follows from: Meitantei Conan: Hiiro no Dangan.

The Akai family, is a dangerous family shrouded in mystery, with members of the family entangled in various intrigues. Centering around Shuuichi Akai, who was thought to be dead at the Raiha pass, this movie gets up-close with the personalities and perspectives of Masumi Sera, Shukichi Haneda, and Mary, which have been revealed in bits and pieces so far, and unravels their relationship. The climax of the "Scarlet" series ends with the splendid come-back of Shuuichi Akai at the Raiha pass. A prologue to a certain incident shows that Toru Amuro aka Bourbon, Shuuichi Akai's rival, gets "clues" from the FBI. Toru Amuro intensively investigates the relationship between Shuuichi Akai and Subaru Okiya. Akai's return at the end of the unparalleled battle between wits and intellect has shocked all viewers. To add to that, the truth behind the "Alibi play" series reveals that Conan played a part in it. The Akai family is an integral part of the "Detective Conan" series. This compilation will thoroughly dissect the clues, foreshadowing, and the family's relationship with Conan seen so far in the series. This is a must-watch for those who want to understand the mysterious Akai family. This compilation focusing on one illicit family features new narration by Conan and edited audio and presents the [Dangerous family that has shot through the world] with its clear story line. (Source: TMS Entertainment)

Official synopsis from AniList.