Previous batch of new episodes debuted on October 3
The staff for the Butt Detective ( Oshiri Tantei ) anime announced on Wednesday that the anime will have new episodes that will premiere in April 2027. The staff made the announcement on November 4, which has the nickname "Nice Butt Day" ("Ii Oshiri no Hi") since "11/04" can be read as a Japanese wordplay on "ii oshi" or "nice butt." The anime's site unveiled the below visual for the anime.
Image via Butt Detective anime's website © トロル・ポプラ社／おしりたんてい製作委員会
The previous batch of new episodes debuted on October 3 and is currently airing.
The first three episodes of the television anime premiered on NHK Educational in May 2018, and a new series of seven episodes premiered in July 2018. The anime began a regular television anime airing in December 2018, and has been running weekly since. The latest batch of new episodes premiered in October 2025.
Eiga Oshiri Tantei: Star and Moon ( Butt Detective the Movie: Star and Moon), the third anime film for the franchise , opened in Japan in March 2025.