Mr. Osomatsu is based off of the gag manga series Osomatsu-kun by Fujio Akatsuka, and ran from 1962 to 1969. The series features a set of sextuplets, the Matsuno brothers, with Osomatsu being the oldest brother and leader of the group.
Synonyms Osomatsu-san: An Anecdote with Horses おそ松さん おうまでこばなし
Release Year 2016
Rating R - 17+
Animation Work Avex Pictures