The sextuplets, after their successful first season, are back to the grindstone of perhaps finding societal balance...or maybe just slacking off and enjoying life through their empty wallets. Humorous topics such as self-doubt, mortality, and the ever-present inferiority complex are abound!
October 10, 2017
The brothers try their hand as streamers after being chastised by their parents for not having jobs. Later, Iyami uses an experimental detergent to keep his suit clean, but after being confused by the Matsunos as an expensive liquor, is revealed to turn anything invisible (up to a point).
Episode 3
Cavematsu-san / Choromatsu and Ichimatsu / Totoko's Challenge
October 18, 2017
Prehistoric versions of the brothers invent ways for them to relive any pent-up urges, with varying degrees of success. Later, Choromatsu and Ichimatsu struggle to make conversation with each other. After, Totoko takes part in an eating contest but keeps getting distracted by the brothers and guest star Shouei.
Episode 4
Cavematsu-san 2 / Matsuzou and Matsuyo
October 24, 2017
The prehistoric sextuplets return, partaking in dangerous sports. Later, in modern day, noticing their father acting strangely, the brothers discover that he is worried that there's not enough spark in his marriage. After embarrassing himself in front of his sons, Matsuzou considers a love potion from Dekapan, but is this really the best way to patch things up with the love of his life?
Episode 5
Osomatsu-san in the Summer
October 31, 2017
A series of summer-themed skits. Jyushimatsu takes part in radio exercises, Iyami and Chibita try to beat the heat, Todomatsu keeps finding himself exiled by his brothers, Karamatsu tries to inject summer into everyone's lives, and the sextuplets attempt to talk to girls on the beach.
Episode 6
Iyami Has Arrived / I Want Friends, Jo
November 7, 2017
Iyami mooches off the sextuplets after falling on hard times and Hatabou searches for a friend.
Episode 7
Cavematsu-san 3 / Sangokushi-san / Osomatsu and Todomatsu
November 14, 2017
The prehistoric sextuplets fool with nature for the last time. Several thousand years later, in a parody of Romance of the Three Kingdoms, Emperor Osomatsu and a group of bizarre generals attempt to take over the country. Meanwhile, in the real world, Osomatsu joins Todomatsu at a mixer, struggling to keep his perverted instincts in check.
Episode 8
Synthesis / Jyushimatsu and the Dolphin / Totoko and Nyaa
November 21, 2017
Dayon uses Dekapan's latest invention to merge various people together into new beings, with a fiendish end goal in mind. Jyushimatsu becomes determined to get a job at a sea park as an actual dolphin, receiving strict training from a familiar female trainer. Meanwhile, Totoko and Nyaa encounter each other at Chibita's oden stand.
Episode 9
Campaign Starting Now! / Game Center Iyami
November 28, 2017
Ichimatsu struggles to get any sleep with his brothers being noisy all night and refusing to turn off the light. Unable to take anymore, Ichimatsu starts monitoring the brothers' courtesy towards each other, leading Osomatsu to get criticized the most. Later, Iyami proves his skills at the arcades by playing games at their highest difficulty.
Episode 10
Karamatsu and Brother / New Employee Totoko / Dubbingmatsu-san
December 5, 2017
Karamatsu tries to take on various requests from everyone to look like a reliable brother, only to take on more than he can handle, so Choromatsu tries to teach him how to refuse. Totoko begins working at a company, proving to be a handful for her superior Todomatsu. Later, a pair of seiyuu attend a dubbing session of an episode of Mr. Osomatsu, witnessing how the sextuplets do their work.
Episode 11
Chibita's Revenge
December 12, 2017
Already angered over the sextuplets refusing to paying off their oden tab, Chibita vows revenge on them after they pluck out his one-and-only hair. That night, Chibita begins taking out the siblings on by one, shaving all of their hair and stuffing oden in their bodies.
Episode 12
Totoko and Nyaa 3 / The Eitaro Family / Give Them Back / Totoko and Nyaa 4
December 19, 2017
Jyushimatsu befriends a young boy named Eitarou but gets called in by Eitarou's mother when he starts imitating him. Later, Dayon steals Dekapan's trademark boxers, forcing him to give chase all over the city and universe while butt naked.
Episode 13
Year-end
December 26, 2017
A series of end-of-year skits. Osomatsu and Choromatsu try to do one thing that could make them say they had a good year, Ichimatsu gets persuaded to take part in a lottery, Dekapan and Dayon pound mochi together, Hatabou gets pestered by some greedy Jizou statues, and Choromatsu sends some untruthful New Years' cards. During the second half, a news crew documents Todomatsu, who was let go from the Matsuno family the previous year and is forced to try out for a reserve team.
Episode 14
Weekly Drama Serial - Sanematsu-san: Episode 9 / UMA Expedition Team / The Choromatsu Incident
January 9, 2018
Sanematsu wakes up in Osomatsu's world as the seventh Matsuno brother. / Doo-wah! Cryptid hunters Jyushimatsu, Iyami, and Hatabou go on an expedition to find a Super Mongolian Death Worm. / Choromatsu changes up his image by dying his hair brown, making it hard for his brothers to tell him that it's doesn't actually make him look cool.
Episode 15
UMA Expedition Team 2 / Jar / Karamatsu Taxi / Totty Quiz
January 16, 2018
Doo-wah! Iyami, Jyushimatsu, and Hatabou hunt down the chupacabra. / The brothers struggle to remove the lid off of a particularly stubborn jar. / Karamatsu runs his own taxi service, proving to have no idea what he is doing when he picks up an office lady played by Totoko. / Totty holds a quiz for his brothers, containing several questions without right answers.
Episode 16
Space Pirates / Gourmet Round / The Cutie Next Door
January 23, 2018
A group of aliens pursue the legendary space pirate, Shazarr. Later, displeased with Chibita's oden, Matsuzou serves up his own brand of the dish. Finally, the sextuplets become enamored by their new neighbor, Kinko Inuyama, prompting jealousy from Totoko when they go on a date with Kinko instead of her.
Episode 17
UMA Expedition Team 3 / Punishment / Inn
January 29, 2018
Doo-wah! The expedition team of Iyami, Jyushimatsu, and Hatabou search for the Devil Yeti. Ichimatsu becomes paranoid when lucky things happen to him all day, so he and Jyushimatsu try to punish themselves to balance things out. A lovey-dovey couple go to a hot spring inn that's haunted by a zashiki-warashi named Osoma.
Episode 18
Iyami, Alone in the Wind
February 5, 2018
In the 1960s, Iyami comes across a blind flower girl named Okiku and, despite being poor himself, tries to help her raise money for eye surgery.
Episode 19
President Dekapan / Ventriloquism / Valentine's Day
February 12, 2018
After Dekapan becomes president, his secretary Todomatsu tries to keep him from pressing the Big Red Button. Iyami attempts to pull off a sham ventriloquism scheme by having Chibita and Hatabou act as his puppets. On Valentine's Day, the brothers try in vain to get some Valentine's chocolate from someone.
Episode 20
Tidbits Collection 2
February 19, 2018
Yet another collection of random skits, with Dayon's live reaction complimenting. Chibita tries selling some sextuplet meat buns, Choromatsu files his taxes, Osomatsu accuses his brothers of stealing his wallet, a fierce wave of pollen hits town, Totoko tries to escape a creepy maze, raccoon Jyushimatsu cleans his food, Todomatsu tries doing something crazy, kindergartners visit a bread factory, the Proper-Rangers prepare to set off, and Osomatsu takes part in an Olympic skeleton event.
Episode 21
The Late Night Himatsuya / BANANA / NEET Correctional Facility
February 26, 2018
The brothers get rowdy while getting drunk at a restaurant. Unemployed office lady Totomi ends up taking a job at a strange establishment that offers some peculiar services. After being visited by a salesman, Matsuyo contemplates sending off one of her sons to a NEET correctional facility, asking Choromatsu to help her decide which one to send away.
Episode 22
Overseas Vacation
March 5, 2018
Osomatsu and the rest take off for a wonderful Hawaiian vacation, only for disaster to strike, crashing Hatabou's private jet somewhere in the Pacific. How will our strange company survive the terrible desert island wilderness?
Episode 23
The Late Night Himatsuya 2 / Dayon and Dayon / Iyami-san Is Troubled / The Late Night Himatsuya 3
March 12, 2018
The Matsunos get drunk at the izakaya again. Dayon meets his doppelgänger. Iyami attempts suicide. The Matsunos get drunk at the izakaya one last time, but things turn introspective.
Episode 24
Cherry Blossoms
March 20, 2018
Matsuzou becomes hospitalized, leading the brothers to seriously think about their lives and get proper jobs to support their family. A chance meeting with Totoko sets Osomatsu's mind straight...
Episode 25
Mr. Osomatsu in Hell
March 27, 2018
The Matsunos and Iyami are killed in a freak plane crash, sending them to Hell. In mourning, the others ponder a way to bring the status quo back to its rightful place with the help of someone near and dear to them.
