4th Season Plot
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.
Mr. Osomatsu 4th Season aired on July 9th, 2025.
Where to Watch 'Mr. Osomatsu' 4th Season
4th Season Episodes
1. It's Starting Again
The sextuplets spend a lazy Tanabata with friends and neighbors.
2. Watermelon Alien
The sextuplets get a craving for watermelon, unbeknownst to an intergalactic invasion being underway.
3. Thunderstorms and Crew Cuts
A rainy day forces the sextuplets indoors, leading to a series of events involving Ichimatsu's bad new haircut.
4. Temple Festival
The sextuplets and their friends get ready for a mysterious temple festival.
5. Rest / Fishing Hermit
After the festival, the sextuplets get some rest to ease their injuries. / Two fishermen (Todomatsu and Karamatsu) meet a fishing hermit (Jyushimatsu).
6. Fans and Time Machines
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. Storytime, Jo
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 mysterious power, Hansel and Gretel get diplomatic, and several cranes repay their debts to one very generous old man.
8. Ichimatsu and the Thieving Cat
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. The Idiot Series
Television parodies featuring the Osomatsu cast. The older set does some calisthenics with disastrous results, Jyushipi and Choropi conjure up some magical cooking, the sextuplets and their parents involve themselves in a yakuza movie-style argument, a sextet of singing fungi try to escape their fate of harvesting, and the Idiot Brothers, Idiot Sisters, and Idiot Married Couple partake in a manzai sketch comedy bit.
10. Iyami and the Shy Little Aliens
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. The Sextuplets Have the Same Dream
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 brothers have.
12. The End of Summer
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, angrily pressures his childhood buddy to stay.
