While Viz Media has tackled the more recent material with Osomatsu-san, Discotek Media dipped into one of the previous anime series with Osomatsu-kun.
Directed by Akira Shigino based on the series composition by Hiroyuki Hoshiyama, Yoshiyuki Kishi handled the character designs and it was animated by Pierrot.
That show from 1966 has now made its way to the RetroCrush app where it’s run is being made available to viewers in its original Japanese language with English subtitles.