Episode guide
Mr. Osomatsu: 4th Season
13 episodes · premiered Jul 9, 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.
- Episode 1: It's Starting Again Jul 9, 2025 · 24m The sextuplets spend a lazy Tanabata with friends and neighbors.
- Episode 2: Watermelon Alien Jul 16, 2025 · 24m The sextuplets get a craving for watermelon, unbeknownst to an intergalactic invasion being underway.
- Episode 3: 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.
- Episode 4: Temple Festival Jul 30, 2025 · 24m The sextuplets and their friends get ready for a mysterious temple festival.
- Episode 5: 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).
- Episode 6: 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.
- Episode 7: 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…
- Episode 8: 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.
- Episode 9: 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…
- Episode 10: 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.
- Episode 11: 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.
- Episode 12: 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…
- Episode 13: 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.