Mr. Osomatsu 4th Season poster

Mr. Osomatsu

Mr. Osomatsu — 4th Season

4th Season · 2025 · 13 episodes

Join the Matsuno sextuplets and all the rest as they celebrate what will hopefully be a relaxing summer, if not for the fact that they're still broke and not even trying for employment.

Episodes

13 episodes

  1. Mr. Osomatsu season 4 episode 1 still

    Episode 1

    It's Starting Again

    July 9, 2025 · 24 min

    The sextuplets spend a lazy Tanabata with friends and neighbors.

  2. Mr. Osomatsu season 4 episode 2 still

    Episode 2

    Watermelon Alien

    July 16, 2025 · 24 min

    The sextuplets get a craving for watermelon, unbeknownst to an intergalactic invasion being underway.

  3. Mr. Osomatsu season 4 episode 3 still

    Episode 3

    Thunderstorms and Crew Cuts

    July 23, 2025 · 24 min

    A rainy day forces the sextuplets indoors, leading to a series of events involving Ichimatsu's bad new haircut.

  4. Mr. Osomatsu season 4 episode 4 still

    Episode 4

    Temple Festival

    July 30, 2025 · 24 min

    The sextuplets and their friends get ready for a mysterious temple festival.

  5. Mr. Osomatsu season 4 episode 5 still

    Episode 5

    Rest / Fishing Hermit

    August 6, 2025 · 24 min

    After the festival, the sextuplets get some rest to ease their injuries. / Two fishermen (Todomatsu and Karamatsu) meet a fishing hermit (Jyushimatsu).

  6. Mr. Osomatsu season 4 episode 6 still

    Episode 6

    Fans and Time Machines

    August 13, 2025 · 24 min

    After their fan breaks, the sextuplets set off on a time travel mission to recover the fan when it worked, with many failed retrievals made along the way.

  7. Mr. Osomatsu season 4 episode 7 still

    Episode 7

    Storytime, Jo

    August 20, 2025 · 24 min

    Classic children's tales retold with an Osomatsu bent. A Dog of Flanders with many ludicrous variants of Nello and Patrache's deaths, Snow White has a mysterio…

  8. Mr. Osomatsu season 4 episode 8 still

    Episode 8

    Ichimatsu and the Thieving Cat

    August 27, 2025 · 24 min

    Ichimatsu tries to domesticate a stray cat known for its human-like thievery, but runs into trouble when his new buddy falls back into their old ways.

  9. Mr. Osomatsu season 4 episode 9 still

    Episode 9

    The Idiot Series

    September 3, 2025 · 24 min

    Television parodies featuring the Osomatsu cast. The older set does some calisthenics with disastrous results, Jyushipi and Choropi conjure up some magical coo…

  10. Mr. Osomatsu season 4 episode 10 still

    Episode 10

    Iyami and the Shy Little Aliens

    September 10, 2025 · 24 min

    After an influx of intergalactic immigrants take residence in Japan, Iyami opens up a maid cafe with some shy multiplying aliens as the main attraction.

  11. Mr. Osomatsu season 4 episode 11 still

    Episode 11

    The Sextuplets Have the Same Dream

    September 17, 2025 · 24 min

    Like how some twins can feel phantom pains, the sextuplets occasionally have the same dream. Here are two surreal dreams about bodily transformation that the b…

  12. Mr. Osomatsu season 4 episode 12 still

    Episode 12

    The End of Summer

    September 24, 2025 · 24 min

    The end of summer has arrived, with Chibita deciding to close up his oden stall and pursue a charitable cause. Osomatsu, frustrated with this sudden change, an…

  13. Mr. Osomatsu season 4 episode 13 still

    Episode 13

    The Matsuno Ten

    June 13, 2026 · 23 min

    In a parody of 80s music show "The Best Ten", the cast perform retro-styled songs, themed to the sounds of the late Showa era's most popular musicians.

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