Oshiri Tantei 9 Anime Details and Episodes Ninth season of Oshiri Tantei. Series info Watch free DetailsFormatTvStatusFinishedEpisodes8Duration20 minSeasonSpring 2025StudiosToei AnimationSourcePicture bookCountryJapan GenresComedyFantasyMystery RelatedOshiri Tantei 8 (Prequel)Oshiri Tantei 9 Part 2 (Sequel) CharactersOshiri Tantei (Supporting)Brown (Supporting)Kaitou U (Supporting)Suzu (Supporting)Maltese Shochou (Supporting)