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Season guide

Mr. Osomatsu: 1st season

25 episodes Premiered Oct 5, 2015 Updated Jul 23, 2026

Mr. Osomatsu is an anime series that follows the lives of the now 20-something Matsuno sextuplets. The series is a continuation of the earlier "Osomatsu-kun" series. The Matsuno brothers are portrayed as jaded young adults looking for a job and love, but struggling to achieve their goals. The series features a mix of realistic and fantastical storylines, including tales of imagination set in different time periods. T

Season overview

Mr. Osomatsu is an anime series that follows the lives of the now 20-something Matsuno sextuplets. The series is a continuation of the earlier "Osomatsu-kun" series. The Matsuno brothers are portrayed as jaded young adults looking for a job and love, but struggling to achieve their goals. The series features a mix of realistic and fantastical storylines, including tales of imagination set in different time periods. The Matsuno sextuplets' lives are marked by bizarre and humorous adventures.

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Season 1 Episodes

Episode Guide

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Season 1 Progress Shield

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Season 1: Filler vs. Essential Canon

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Mytharc (3): Crucial lore & season climaxes
Core (21): Character development & subplots
Side Quest (1): Standalone / filler
S1·E1 Mytharc

Osomatsu-kun Returns

Oct 5, 2015 · 25 min

The Matsuno brothers and company try to adapt their 1960s-era show to contemporary times, with mixed results.

S1·E3 Filler

Tidbits Collection

Oct 19, 2015 · 25 min

A collection of unrelated shorts starring the wild and wacky cast of Osomatsu-san. A trip to outer space ends in disaster, the Pachinko Police are called in, and a familiar-looking

S1·E4 Core

Let's Get Independent / This is Totoko

Oct 26, 2015 · 25 min

The Matsuno brothers compete to ensure their divorcing parents will care of each of them. / Childhood crush Totoko asks the sextuplets for help in a crisis.

S1·E5 Core

The Karamatsu Incident / ESP Kitty

Nov 2, 2015 · 25 min

Karamatsu gets kidnapped and held for ransom by Chibita, but his brothers don't do anything. / A cat is given the ability to speak and read minds, which causes mayhem for the Matsu

S1·E7 Core

Todomatsu and the 5 Demons / To the North

Nov 16, 2015 · 25 min

Todomatsu gets a job at a local coffeehouse. His brothers want no such success. / Dekapan and Dayon enjoy a carefree northbound trip together.

S1·E8 Core

The Calming Osomatsu / Totoko's Dream

Nov 23, 2015 · 25 min

Captain Choromatsu invites an interesting detective onto an increasingly dangerous murder case to ease the tension of the crew. / Totoko wants to be a popular idol, but reality is

S1·E9 Core

Chibita and Oden / Jyushimatsu Falls in Love

Nov 30, 2015 · 25 min

Karamatsu ends up as Chibita's apprentice at his oden stand. / Jyushimatsu falls in love and his brothers try to help him achieve his romance as best they can.

S1·E10 Core

Iyami and Chibita's Rental Girlfriend

Dec 7, 2015 · 25 min

Iyami and Chibita scheme to dress up as girls, and trick the Matsuno brothers (and their wallets) into falling in love with them with the help of a sex-change drug. It's only a mat

S1·E11 Core

Christmas Osomatsu-san

Dec 14, 2015 · 25 min

A series of Christmas-themed skits. Among those included are a zombified cold open, Ichimatsu disturbing a happy couple on a date, an F6 holiday fantasy, and the Annual Matsuno Fam

S1·E12 Core

Year-End Special-san

Dec 21, 2015 · 25 min

Osomatsu and Totoko host an end of year special broadcast, looking back on previous episodes to determine which of the brothers is the biggest loser.

S1·E13 Core

Sanematsu-san / Girlymatsu-san / Accident?

Jan 4, 2016 · 25 min

A salaryman named Sanematsu takes care of his six siblings. / The Matsuno brothers play the roles of a friend group of working girls. / Choromatsu gets caught during a private mome

S1·E16 Core

Cat Cafe / Matsuno Max / The Ichimatsu Incident

Jan 25, 2016 · 25 min

Ichimatsu gets a job interview at a cat cafe, but when in Rome, he does as the locals do. / In an apocalyptic world, F6 battles against Iyami and Dekapan, who are robbing the dry-s

S1·E17 Core

Jyushimatsu Festival

Feb 1, 2016 · 25 min

A series of Jyushimatsu-oriented skits, including the fifth-youngest defusing a bomb, having a late-night cup of noodles, selling baseball doujins at Comiket, and devolving the wor

S1·E18 Core

Girlymatsu-san 3 / Iyami's Counterattack

Feb 8, 2016 · 25 min

The Girlymatsus attend a wedding and try very badly to pretend to not be jealous. / Wanting to become the main protagonist of the franchise again, Iyami holds a bizarre kart race t

S1·E19 Core

Period Drama Osomatsu-san / Choromatsu Rising

Feb 15, 2016 · 25 min

A series of skits take place, set during the Sengoku era. / Choromatsu decides to quit being an idol-worshipper and pursue a job, with only his self-awareness standing in the way.

S1·E20 Core

Tell Me, Hatabou / School Matsu / Iyami's School

Feb 22, 2016 · 25 min

Hatabou starts his own catering service, cooking with a delicious mystery meat. / Osomatsu and the rest play delinquent high school students competing to see who's the toughest. /

S1·E21 Core

Mahjong / Godmatsu

Feb 29, 2016 · 25 min

On a rainy evening, the brothers play a fierce game of mahjong. / The sextuplets suddenly find themselves joined by a seventh brother, Kamimatsu, born from the goodness that fell o

S1·E22 Core

The Star of Hope, Todomatsu / Final Sheeeh

Mar 7, 2016 · 25 min

Todomatsu holds auditions to take one of his brothers with him to a mixer, struggling to find anyone worth taking. / Iyami meets a kung-fu master who believes him to possess a spec

S1·E23 Core

Kerosene / Dayon Tribe

Mar 14, 2016 · 25 min

When the family heater runs out of kerosene, the brothers to force each other to get a refill. / Osomatsu, Karamatsu, and Choromatsu find themselves in an underground village popul

S1·E24 Mytharc

Totoko's Huge Panic / Letter

Mar 21, 2016 · 25 min

Totoko is jealous when those she knows find more success than her. / Choromatsu manages to land a job and moves out of the house, with the other brothers soon following suit, leavi

S1·E25 Mytharc

Osomatsu-san, Such as It Was

Mar 28, 2016 · 25 min

The brothers quickly abandon their new lifestyles upon learning they have been invited to a baseball tournament for the finale.

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