List of Mr. Osomatsu episodes
Mr. Osomatsu, known in Japan as Osomatsu-san, is a 2015 anime television series directed by Yoichi Fujita and produced by Pierrot, based on Fujio Akatsuka's Osomatsu-kun manga series. Celebrating Akatsuka's 80th birthday, the series follows the sextuplet Matsuno brothers as they now start living as adults.
The first season aired between October 6, 2015, and March 29, 2016, on TV Tokyo and other channels, and was simulcast by Crunchyroll. Following its broadcast, the first episode was removed from streaming and is replaced by an original video animation episode in its home video release. A special episode, produced in collaboration with the Japan Racing Association, aired on December 12, 2016. For the first twelve episodes, the opening theme is "Hanamaru Pippi wa Yoi Ko dake" by AŌP while the ending theme is "Six Same Faces ~Kon'ya wa Saikō!!!!!!~ by Iyami and the Matsuno brothers. For episodes thirteen onwards, the opening theme is "Zenryoku Batankyū" by AŌP while the ending theme is "Six Shame Faces ~~Kon'ya mo Saikō!!!!!!~ by Totoko and the Matsuno Brothers. In the end of special episode, the message "See You Again" appeared as the endcard.
The second season aired in Japan between October 3, 2017, and March 27, 2018. For the first thirteen episodes, the opening theme is "Kunshi Ayauku Mo Chikouyore" by AŌP while the ending theme is "Let's Go! Muttsugo! ~Rokushoku no Niji~" by ROOTS66. From episode 14 onwards, the opening theme is "Maboroshi Wink" by AŌP while the ending theme is "Otona÷6×Kodomo×6" by The Osomatsu-sans. The third season aired in Japan between October 13, 2020, and March 30, 2021. The fourth season began airing in Japan on July 9, 2025, on TV Tokyo and its affiliates. The opening theme song is titled, "Osomatsu-san no Bomba Sheeh!" performed by DA PUMP while the ending theme is titled "Buddy" performed by Hitomi from and the main characters.