Mr. Osomatsu — 4th Season
13 episodesFirst aired 9 July 2025
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.
E1It's Starting Again
Jul 202524m
The sextuplets spend a lazy Tanabata with friends and neighbors.
E2Watermelon Alien
Jul 202524m
The sextuplets get a craving for watermelon, unbeknownst to an intergalactic invasion being underway.
E3Thunderstorms and Crew Cuts
Jul 202524m
A rainy day forces the sextuplets indoors, leading to a series of events involving Ichimatsu's bad new haircut.
E4Temple Festival
Jul 202524m
The sextuplets and their friends get ready for a mysterious temple festival.
E5Rest / Fishing Hermit
Aug 202524m
After the festival, the sextuplets get some rest to ease their injuries. / Two fishermen (Todomatsu and Karamatsu) meet a fishing hermit (Jyushimatsu).
E6Fans and Time Machines
Aug 202524m
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.
E7Storytime, Jo
Aug 202524m
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.
E8Ichimatsu and the Thieving Cat
Aug 202524m
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.
E9The Idiot Series
Sept 202524m
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.
E10Iyami and the Shy Little Aliens
Sept 202524m
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.
E11The Sextuplets Have the Same Dream
Sept 202524m
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.
E12The End of Summer
Sept 202524m
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.
E13The Matsuno Ten
Jun 202623m
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.