Watch Mr. Osomatsu Episode 12 – Sanematsu-san / Girlymatsu-san / Accident? online on animeTVplus with subtitles and HD playback.
← Episode 11 – Year-End Special-san All Mr. Osomatsu episodes Episode 13 – We Caught a Cold / Todomatsu's Line / Choromatsu-sensei →
Other seasons: Mr. Osomatsu 2nd season, Mr. Osomatsu THE MOVIE, Mr. Osomatsu 3rd season, Mr. Osomatsu 4th season
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