Mr. Osomatsu — 4th Season
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
E01 It's Starting Again
Jul 9, 2025 · 24m
The sextuplets spend a lazy Tanabata with friends and neighbors.
E02 Watermelon Alien
Jul 16, 2025 · 24m
The sextuplets get a craving for watermelon, unbeknownst to an intergalactic invasion being underway.
E03 Thunderstorms and Crew Cuts
Jul 23, 2025 · 24m
A rainy day forces the sextuplets indoors, leading to a series of events involving Ichimatsu's bad new haircut.
E04 Temple Festival
Jul 30, 2025 · 24m
The sextuplets and their friends get ready for a mysterious temple festival.
E05 Rest / Fishing Hermit
Aug 6, 2025 · 24m
After the festival, the sextuplets get some rest to ease their injuries. / Two fishermen (Todomatsu and Karamatsu) meet a fishing hermit (Jyushimatsu).
E06 Fans and Time Machines
Aug 13, 2025 · 24m
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.
E07 Storytime, Jo
Aug 20, 2025 · 24m
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.
E08 Ichimatsu and the Thieving Cat
Aug 27, 2025 · 24m
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.
E09 The Idiot Series
Sep 3, 2025 · 24m
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.
E10 Iyami and the Shy Little Aliens
Sep 10, 2025 · 24m
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.
E11 The Sextuplets Have the Same Dream
Sep 17, 2025 · 24m
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.
E12 The End of Summer
Sep 24, 2025 · 24m
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.
E13 The Matsuno Ten
Jun 13, 2026 · 23m
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.
