Osomatsu-san Movie: Gekijou Koukai Kinen - Original Tanpen Gekijou

えいがのおそ松さん 劇場公開記念 オリジナル短編劇場

A short series depicting side stories about the brothers' daily life, released on dTV streaming service. It received an advance screening together with the movie on March 7 in Tokyo. (Source: AniDB)