Mr. Osomatsu Sequel/spin-off of the gag manga classic Osomatsu-kun, entailing the lives of the now 20-something NEET virgin Matsuno sextuplets and the bizarre adventures they find themselves into in the modern day. Details Casts Videos Galleries Posters Season Lists Title Mr. Osomatsu Genres Animation Comedy First Air Date 2015-10-05 Last Air Date 2021-03-29 Episode Runtime 00 Hours 25 Minutes Total Season(s) 3 Total Episode(s) on All Seasons 75 Runtime 25 Production Companies Daiichi Shokai CO., Avex, avex pictures, Pierrot Jun Fukuyama... Ichimatsu Matsuno... Aya Endo... Totoko... Yuichi Nakamura... Karamatsu Matsuno... Kazuhiko Inoue... MatsuzĂ´ Matsuno... Miyu Irino... Todomatsu... Hiroshi Kamiya... Choromatsu Matsuno... Sachi Kokuryu... Chibita... Kujira... Matsuyo Matsuno... Daisuke Ono... Juushimatsu Matsuno... Mr. Osomatsu - Official Trailer (Trailer) Original Size (1280x720) Original Size (1920x1080) Original Size (1920x1080) Original Size (1920x1080) Original Size (1920x1080) Original Size (1280x720) Original Size (680x1000) Original Size (680x1000) Original Size (768x1086) Original Size (960x1280) Original Size (777x1165) Original Size (500x750) Original Size (500x750) Original Size (500x750) Original Size (666x999) Season 1 25 Episode(s) 2015-10-05 Season 2 25 Episode(s) 2017-10-03 Season 3 25 Episode(s) 2020-10-12