Osomatsu-san Anime Details and Episodes Matsuno household has six naughty and mischievous sons (who are sextuplets), led by the eldest Osomatsu. They were grade-schoolers back in the Showa… Series info Watch free DetailsFormatNovelStatusFinishedSourceOriginalCountryJapan GenresComedy TagsParodyFamily LifeTwinsPrimarily Male CastMale Protagonist RelatedMr. Osomatsu THE MOVIE (Alternative)Mr. Osomatsu (Alternative)Osomatsu-san (Alternative)Mr. Osomatsu 2nd season (Alternative)Osomatsu-kun (Parent Story) CharactersJyushimatsu MatsunoIchimatsu MatsunoTodomatsu MatsunoChoromatsu MatsunoKaramatsu Matsuno