4th Season

Season 4 · 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.

1It's Starting AgainThe sextuplets spend a lazy Tanabata with friends and neighbors.
2Watermelon AlienThe sextuplets get a craving for watermelon, unbeknownst to an intergalactic invasion being underway.
3Thunderstorms and Crew CutsA rainy day forces the sextuplets indoors, leading to a series of events involving Ichimatsu's bad new haircut.
4Temple FestivalThe sextuplets and their friends get ready for a mysterious temple festival.
5Rest / Fishing HermitAfter the festival, the sextuplets get some rest to ease their injuries. / Two fishermen (Todomatsu and Karamatsu) meet a fishing hermit (Jyushimatsu).
6Fans and Time MachinesAfter 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.
7Storytime, JoClassic 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.
8Ichimatsu and the Thieving CatIchimatsu 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.
9The Idiot SeriesTelevision 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.
10Iyami and the Shy Little AliensAfter an influx of intergalactic immigrants take residence in Japan, Iyami opens up a maid cafe with some shy multiplying aliens as the main attraction.
11The Sextuplets Have the Same DreamLike 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.
12The End of SummerThe 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.
13The Matsuno TenIn 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.

Episodes