Oshiri Tantei: SHIRIARTY is an anime film that premiered in spring 2022, produced by Toei Animation.

About the production: the story comes from a other, the film runs about 50 minutes and its current status is "finished".

Its main genres are comedy and mystery.

In Oshiri Tantei: SHIRIARTY, a baffling series of crimes turns out to be the work of Shiriarty, a villain who seeks to steal a mysterious treasure known as the "O-PARTS". Butt Detective along with his assistant, Brown, enlist the aid of Audrey, an investigator from the international police organization Wanterpol, in an effort to prevent the "O-PARTS" from falling into the wrong hands while Shiriarty strives to plunge the world into darkness. (Source: Crunchyroll, edited)

Official synopsis from AniList.