Synopsis
The first animated adaptation of the 1960s gag manga series, focusing on the adventures of the identical 10-year-old Matsuno sextuplets, led by the titular brother himself. Aside from the Matsunos, the series also showcases the tales of their rival Chibita, and the constantly job-switching conman Iyami.
Episodes
Season 11
Leave the House-Sitting to the Dog / The Beggar RobotOsomatsu and Choromatsu mind Chibita as babysitters, but grow bored and decide to have a mysterious dog take the heed instead. / Dekapan creates a robot powered by spare change that inadvertently leads to disaster in the hands of the sextuplets.25m2
Iyami's Fishing Pond / The 40 ThievesIyami attempts to con Osomatsu, Choromatsu, and Chibita out of their hard-earned money at his fishing pond with a rare fish that gives them all their money back if caught. / Chibita plays the role of the leader of a gang of thieves who target Osomatsu for discovering their misdeeds.25m3
Chibita's Stray Cat Strategy / A Thief Fell From The SkyTotoko's grandpa enlists the help of the sextuplets to stop Chibita and his gang of feral cats from attacking the fish store. / Iyami and Chibita fly around town in a helicopter to cause mischief amongst the locals.25m4
The Helpful Robot / Iyami's Cleaning StoreA housework robot (shaped like Chibita) causes havoc amongst the Matsuno family when he malfunctions. / Iyami runs a scam out of a laundromat to catastrophic failure.25m5
There's the Shortcut / Laughing Costs 1 Million Yen!Iyami and Chibita feign construction workers to scam the sextuplets out of their money by making a paid shortcut to school. / A camera company offers a cash prize for whoever can photograph a face-making man without any made faces, leading the sextuplets and Chibita to try to claim the reward.25m6
Osomatsu Targeted / Chibita's Martial ArtsSpooky things seem to be happening around town, leading the sextuplets to discover a secret of their own appearance. / Chibita challenges the brothers to a martial arts battle.25m7
The Magical Tea Kettle / The Angry SupermanIyami scams the sextuplets with a magic kettle, actually utilizing Chibita as the secret inside. / Chibita and the shapely-mouthed Bokeo get revenge on the sextuplets for harming their frog friend.25m8
It's All Fine Until You Take Off His Hat / Boar HuntingChibita appears alongside Totoko wearing a strange hat that, when removed, changes his temperament from good to bad, leading to chaos amongst the Matsunos. / Chibita goes boar hunting and encounters the sextuplets and Iyami.25m9
Iyami the Dentist / Defeat the Mosquitoes' Enemies!Osomatsu visits dentist Iyami's office for a toothache, but due to an unpaid bill, assists him in fixing up the mouth of Dekapan's crocodilian "son". / After Chibita's mosquito colony is destroyed by the sextuplets, he and Iyami create a watermelon-shaped bomb to enact revenge.25m10
I am Chibita, The Giant! / Counterattack Operation PepenChibita, with the help of his scientist uncle, devise a plan to shrink the sextuplets down to flea size so that he will no longer be shorter than them. / A roaming minstrel and Chibita team up to enact revenge on the sextuplets with their army of cats.25m11
Osomatsu-kun Gets Adopted / Chibita the Invisible ManA wealthy couple pay the sextuplets' parents to loan one of their boys out to them as a paid son, but the love they have for Osomatsu and Choromatsu is much too young for them. / Chibita and the brothers drink an invisibility potion and cause mischief.25m12
The Cutie Who Moved Close By / Rampage of the Smog FamilyA new girl moves into the neighborhood, and the sextuplets try to put the moves on her while confusing her dad for their eerily-resembling dog. / A crime family that Chibita is a part of has business with the sextuplets, climaxing in a rainy nighttime brawl.25m13
The Opposite-Head Experiment / Iyami the DesignerAn apple-headed doctor conducts an experiment on the sextuplets, but his seemingly strange mood swings are more than meets the eye. / Iyami works as a bespoke clothing designer for the Matsunos, but suspicions are aroused when the family's Children's Day koinobori goes missing.25m14
Iyami's Ninja Methods / Keke, I'm the Class President!Ninjutsu master Iyami enlists the help of his disciples Chibita and Moguramaru to get revenge on the sextuplets. / Chibita attempts to thwart Totoko's run as Class President.25m15
Chibita, Did You Turn Into a Dog? / The Suspicious Transfer StudentChibita takes the place of Dekapan's trained dog "son" when ringmaster Iyami buys him for his circus. / A student with a padlocked hat transfers to the sextuplets' school, leading to a mystery of his identity.25m16
The Time Machine Sends Us to the Stone Age / The Junk StrategyThe Matsunos take a trip in a wacky inventor's time machine to the age of the dinosaurs, where they meet their friends' prehistoric counterparts. / Neighbors Iyami and Chibita go to war with the Matsunos over trash disposal.25m17
Chika-chan and Chibita / Don't Wake The Sleeping ChildChibita falls in love with snooty Chikako, but the sextuplets' faulty attempts at woo cause more than trouble for the little lovebirds. / The sextuplets watch over a sleepwalking boy who becomes violent when awoken.25m18
Suspicious Presents / See Doctor Chibita For Tooth DecayA Santa Claus-like figure arrives in the town, in actuality a persona put on by burglar Moguramaru to hide stolen goods. / Deranged dentist Chibita enacts periodontal violence against people with better teeth than him.25m19E19Is Chibita a Good Boy? / Chibita's GirlfriendThe sextuplets become victims of a vindictive clothesless Chibita, who tries to steal their clean clothes. / The Matsunos offer Dekapan a place for his pig "daughter" to stay, but Chibita falls in love with her without knowing she isn't human.25m20E20Iyami the Rude Guest / Chibita the SailorThe sextuplets' father invites work friend Iyami over for dinner, but chaos ensues in response to his disruptive behavior. / Chibita attempts to sneak onto an ocean liner under the guise of a sailor.25m21E21Iyami's French Eaves / Dad Ran AwayIyami runs a "genuine" French restaurant with Chibita, and receives criticism for his poor service and lack of research. / Mr. Matsuno resigns from his position as patriarch, and runs away.25m22E22Iyami's Diamond Dentures / Forward! Cat TroopersUltra-rich Iyami accidentally breaks his bejeweled dentures, so with the help of his assistant Chibita, he tries to pin the blame on the sextuplets. / Chibita's army of cats ransack the town's oden vendors of his most favorite food, leading Iyami and the sextuplets to take him out.25m23
The Suspiscious Mynah Bird / Chibita's LullabyA mynah bird settles into the sextuplets' birdhouse village, but is harboring a less-than-desired guest in its home. / Chibita becomes a foster mother for a foundling.25m24E24Get That Lousy Fugitive! / I'm Rich, da jo25m25E25The Super-Cheap Old Man / Hoe Hoe, Mountain Climbing25m26E26The Fortune-Telling Machine from France / We'll Do Anything in Six Rounds!25m27E27Dad's Robot Strategy / Stop the Lying Duo!25m28E28Rickety Camp Riot / Be a Security Guard, Osomatsu-kun!25m29E29The Sextuplets Become Seven / Promotional Sales War25m30E30Go For It, Kumamatsu / Chibita's a Pet25m31E31Goronyan, the Meteorologist / Lonely Kappataro25m32E32Say Not the Truth / The ¥100,000 Ghost Phone25m33E33Iyami's Fake Beach House / Chibita's Big Circus25m34E34Chibita Walks the Tightrope / Osomatsu is a Bad Kid25m35E35I Hate This Naughty Dog! / The Cries of a Child Summon the Ant Troops25m36E36Chibita's Oden Neurosis / Trick the Tanuki!25m37E37Papa, Please Don't Smoke / Chibita Soars Through the Skies25m38E38Only Chibita Has Filial Piety / Golf is Expensive, jo25m39E39Dekapan's Big Horse Race25m40E40It's a First-Class Car Race, jo / Chibita the Zookeeper25m41E41A Fight Over a Flower / Were You Kidnapped, Osomatsu-kun?25m42E42I've Quit Safecracking!Safecracker Chibita, released on parole, mustn't break into another safe or else he'll be back behind bars. But what will happen when he must use his talents to save a life?25m43E43The Grand Prix Elimination Race / The Search for Chibita's Parents25m44E44Let's Try to Ski for Free25m45E45Please Return My Bonus! / Go For It, Kumamatsu25m46E46The Arsonist Loves Oden / Fighting Robot Rampage25m47E47A Dreadful Christmas Season-zansu / The Sextuplets Become Seven25m48E48A Guide to a Bear Parent and Child / Dekapan Olympics25m49E49Totoko-chan's New Years' Card / Laughing Costs 1 Million Yen!25m50E50Skiiing in a French Fashion / I Don't Need the Magic Lamp Anymore25m51E51The Scary Old Hag / Speak Not the Truth25m52E52The Time Machine Sends Us to the Stone Age / Iyami's French Eaves25m53E53Keke, I'm the Great Detective / Leave the House-Sitting to the Dog25m54E54My Head Shines the Brightest in the World / Papa, Please Don't Smoke25m55E55Headed to Chibita's Jungle / Golf is Expensive, jo25m56E56Chibitaro, Born From a Peach / The Grand Prix Elimination Race25m57E57Kekeke, a Surprise Aerial Attack / Special Program: "We Are Sextuplets"25m58E58I've Quit Safecracking!25m59E59Let's Try to Ski for Free25m60E60Dekapan's Big Horse Race25m
Leave the House-Sitting to the Dog / The Beggar RobotOsomatsu and Choromatsu mind Chibita as babysitters, but grow bored and decide to have a mysterious dog take the heed instead. / Dekapan creates a robot powered by spare change that inadvertently leads to disaster in the hands of the sextuplets.25m2Iyami's Fishing Pond / The 40 ThievesIyami attempts to con Osomatsu, Choromatsu, and Chibita out of their hard-earned money at his fishing pond with a rare fish that gives them all their money back if caught. / Chibita plays the role of the leader of a gang of thieves who target Osomatsu for discovering their misdeeds.25m3Chibita's Stray Cat Strategy / A Thief Fell From The SkyTotoko's grandpa enlists the help of the sextuplets to stop Chibita and his gang of feral cats from attacking the fish store. / Iyami and Chibita fly around town in a helicopter to cause mischief amongst the locals.25m4The Helpful Robot / Iyami's Cleaning StoreA housework robot (shaped like Chibita) causes havoc amongst the Matsuno family when he malfunctions. / Iyami runs a scam out of a laundromat to catastrophic failure.25m5There's the Shortcut / Laughing Costs 1 Million Yen!Iyami and Chibita feign construction workers to scam the sextuplets out of their money by making a paid shortcut to school. / A camera company offers a cash prize for whoever can photograph a face-making man without any made faces, leading the sextuplets and Chibita to try to claim the reward.25m6Osomatsu Targeted / Chibita's Martial ArtsSpooky things seem to be happening around town, leading the sextuplets to discover a secret of their own appearance. / Chibita challenges the brothers to a martial arts battle.25m7The Magical Tea Kettle / The Angry SupermanIyami scams the sextuplets with a magic kettle, actually utilizing Chibita as the secret inside. / Chibita and the shapely-mouthed Bokeo get revenge on the sextuplets for harming their frog friend.25m8It's All Fine Until You Take Off His Hat / Boar HuntingChibita appears alongside Totoko wearing a strange hat that, when removed, changes his temperament from good to bad, leading to chaos amongst the Matsunos. / Chibita goes boar hunting and encounters the sextuplets and Iyami.25m9Iyami the Dentist / Defeat the Mosquitoes' Enemies!Osomatsu visits dentist Iyami's office for a toothache, but due to an unpaid bill, assists him in fixing up the mouth of Dekapan's crocodilian "son". / After Chibita's mosquito colony is destroyed by the sextuplets, he and Iyami create a watermelon-shaped bomb to enact revenge.25m10I am Chibita, The Giant! / Counterattack Operation PepenChibita, with the help of his scientist uncle, devise a plan to shrink the sextuplets down to flea size so that he will no longer be shorter than them. / A roaming minstrel and Chibita team up to enact revenge on the sextuplets with their army of cats.25m11Osomatsu-kun Gets Adopted / Chibita the Invisible ManA wealthy couple pay the sextuplets' parents to loan one of their boys out to them as a paid son, but the love they have for Osomatsu and Choromatsu is much too young for them. / Chibita and the brothers drink an invisibility potion and cause mischief.25m12The Cutie Who Moved Close By / Rampage of the Smog FamilyA new girl moves into the neighborhood, and the sextuplets try to put the moves on her while confusing her dad for their eerily-resembling dog. / A crime family that Chibita is a part of has business with the sextuplets, climaxing in a rainy nighttime brawl.25m13The Opposite-Head Experiment / Iyami the DesignerAn apple-headed doctor conducts an experiment on the sextuplets, but his seemingly strange mood swings are more than meets the eye. / Iyami works as a bespoke clothing designer for the Matsunos, but suspicions are aroused when the family's Children's Day koinobori goes missing.25m14Iyami's Ninja Methods / Keke, I'm the Class President!Ninjutsu master Iyami enlists the help of his disciples Chibita and Moguramaru to get revenge on the sextuplets. / Chibita attempts to thwart Totoko's run as Class President.25m15Chibita, Did You Turn Into a Dog? / The Suspicious Transfer StudentChibita takes the place of Dekapan's trained dog "son" when ringmaster Iyami buys him for his circus. / A student with a padlocked hat transfers to the sextuplets' school, leading to a mystery of his identity.25m16The Time Machine Sends Us to the Stone Age / The Junk StrategyThe Matsunos take a trip in a wacky inventor's time machine to the age of the dinosaurs, where they meet their friends' prehistoric counterparts. / Neighbors Iyami and Chibita go to war with the Matsunos over trash disposal.25m17Chika-chan and Chibita / Don't Wake The Sleeping ChildChibita falls in love with snooty Chikako, but the sextuplets' faulty attempts at woo cause more than trouble for the little lovebirds. / The sextuplets watch over a sleepwalking boy who becomes violent when awoken.25m18Suspicious Presents / See Doctor Chibita For Tooth DecayA Santa Claus-like figure arrives in the town, in actuality a persona put on by burglar Moguramaru to hide stolen goods. / Deranged dentist Chibita enacts periodontal violence against people with better teeth than him.25m19E19Is Chibita a Good Boy? / Chibita's GirlfriendThe sextuplets become victims of a vindictive clothesless Chibita, who tries to steal their clean clothes. / The Matsunos offer Dekapan a place for his pig "daughter" to stay, but Chibita falls in love with her without knowing she isn't human.25m20E20Iyami the Rude Guest / Chibita the SailorThe sextuplets' father invites work friend Iyami over for dinner, but chaos ensues in response to his disruptive behavior. / Chibita attempts to sneak onto an ocean liner under the guise of a sailor.25m21E21Iyami's French Eaves / Dad Ran AwayIyami runs a "genuine" French restaurant with Chibita, and receives criticism for his poor service and lack of research. / Mr. Matsuno resigns from his position as patriarch, and runs away.25m22E22Iyami's Diamond Dentures / Forward! Cat TroopersUltra-rich Iyami accidentally breaks his bejeweled dentures, so with the help of his assistant Chibita, he tries to pin the blame on the sextuplets. / Chibita's army of cats ransack the town's oden vendors of his most favorite food, leading Iyami and the sextuplets to take him out.25m23The Suspiscious Mynah Bird / Chibita's LullabyA mynah bird settles into the sextuplets' birdhouse village, but is harboring a less-than-desired guest in its home. / Chibita becomes a foster mother for a foundling.25m24E24Get That Lousy Fugitive! / I'm Rich, da jo25m25E25The Super-Cheap Old Man / Hoe Hoe, Mountain Climbing25m26E26The Fortune-Telling Machine from France / We'll Do Anything in Six Rounds!25m27E27Dad's Robot Strategy / Stop the Lying Duo!25m28E28Rickety Camp Riot / Be a Security Guard, Osomatsu-kun!25m29E29The Sextuplets Become Seven / Promotional Sales War25m30E30Go For It, Kumamatsu / Chibita's a Pet25m31E31Goronyan, the Meteorologist / Lonely Kappataro25m32E32Say Not the Truth / The ¥100,000 Ghost Phone25m33E33Iyami's Fake Beach House / Chibita's Big Circus25m34E34Chibita Walks the Tightrope / Osomatsu is a Bad Kid25m35E35I Hate This Naughty Dog! / The Cries of a Child Summon the Ant Troops25m36E36Chibita's Oden Neurosis / Trick the Tanuki!25m37E37Papa, Please Don't Smoke / Chibita Soars Through the Skies25m38E38Only Chibita Has Filial Piety / Golf is Expensive, jo25m39E39Dekapan's Big Horse Race25m40E40It's a First-Class Car Race, jo / Chibita the Zookeeper25m41E41A Fight Over a Flower / Were You Kidnapped, Osomatsu-kun?25m42E42I've Quit Safecracking!Safecracker Chibita, released on parole, mustn't break into another safe or else he'll be back behind bars. But what will happen when he must use his talents to save a life?25m43E43The Grand Prix Elimination Race / The Search for Chibita's Parents25m44E44Let's Try to Ski for Free25m45E45Please Return My Bonus! / Go For It, Kumamatsu25m46E46The Arsonist Loves Oden / Fighting Robot Rampage25m47E47A Dreadful Christmas Season-zansu / The Sextuplets Become Seven25m48E48A Guide to a Bear Parent and Child / Dekapan Olympics25m49E49Totoko-chan's New Years' Card / Laughing Costs 1 Million Yen!25m50E50Skiiing in a French Fashion / I Don't Need the Magic Lamp Anymore25m51E51The Scary Old Hag / Speak Not the Truth25m52E52The Time Machine Sends Us to the Stone Age / Iyami's French Eaves25m53E53Keke, I'm the Great Detective / Leave the House-Sitting to the Dog25m54E54My Head Shines the Brightest in the World / Papa, Please Don't Smoke25m55E55Headed to Chibita's Jungle / Golf is Expensive, jo25m56E56Chibitaro, Born From a Peach / The Grand Prix Elimination Race25m57E57Kekeke, a Surprise Aerial Attack / Special Program: "We Are Sextuplets"25m58E58I've Quit Safecracking!25m59E59Let's Try to Ski for Free25m60E60Dekapan's Big Horse Race25mCast
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