Episode 1 - Leave the House-Sitting to the Dog! / The Beggar Robot

Osomatsu and Choromatsu mind Chibita as babysitters, but grow bored and decide to have a mysterious dog take the heed instead. Meanwhile, Dekapan creates a robot powered by spare change that inadvertently leads to disaster in the hands of the sextuplets.

Episode 2 - Iyami's Fishing Pond / The 40 Thieves

Iyami 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. Later, Chibita plays the role of the leader of a gang of thieves who targets Osomatsu for discovering their misdeeds.

Episode 3 - Chibita's Stray Cat Strategy / A Thief Fell From The Sky

Totoko's grandpa enlists the help of the sextuplets to stop Chibita and his gang of feral cats from attacking the fish store. Later, Iyami and Chibita fly around town in a helicopter to cause mischief amongst the locals.

Episode 4 - The Helpful Robot / Iyami's Cleaning Store

A housework robot (shaped like Chibita) causes havoc amongst the Matsuno family when he malfunctions. Meanwhile, Iyami runs a scam out of a laundromat to catastrophic failure.

Episode 5 - There's the Shortcut / Laughing Costs 1 Billion Yen!

Iyami and Chibita feign construction workers to scam the sextuplets out the their money by making a paid shortcut to school. Later, 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.

Episode 6 - Osomatsu Targeted / Chibita's Martial Arts

Spooky things seem to be happening around town, leading the sextuplets to discover a secret of their own appearance. Meanwhile, Chibita challenges the brothers to a martial arts battle.

Episode 7 - The Magical Tea Kettle / The Angry Superman

Iyami scams the sextuplets with a magic kettle, actually utilizing Chibita as the secret inside. Later, Chibita and Bokeo get revenge on the sextuplets for harming their frog friend.

Episode 8 - It's All Fine Until You Take Off His Hat / Boar Hunting

Chibita appears alongside Totoko wearing a strange hat that when removed, changes his temperament from good to bad, leading to chaos amongst the Matsunos. Meanwhile, Chibita goes boar hunting and encounters the sextuplets and Iyami.

Episode 9 - 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". Later, after Chibita's mosquito colony is destroyed by the sextuplets, he and Iyami create a watermelon-shaped bomb to enact revenge.

Episode 10 - I am Chibita, The Giant! / Counterattack Operation Pepen

Chibita, 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. Meanwhile, a roaming minstrel and Chibita team up to enact revenge on the sextuplets with their army of cats.

Episode 11 - Osomatsu-kun Gets Adopted / Chibita the Invisible Man

A 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. Meanwhile, Chibita drinks an invisibility potion and causes mischief.

Episode 12 - The Cutie Who Moved Close By / Rampage of the Smog Family

A 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. Later, a crime family that Chibita is a part of has business with the sextuplets, climaxing in a rainy nighttime brawl.

Episode 13 - The Opposite-Head Experiment / Iyami the Designer

An apple-headed doctor conducts an experiment on the sextuplets, but his seemingly strange mood swings are more than meets the eye. Meanwhile, Iyami works as a bespoke clothing designer for the Matsunos, but suspicions are aroused when the family's Children's Day koinobori goes missing.

Episode 14 - Iyami's Ninja Methods / Keke, I'm the Class President!

Ninjutsu master Iyami insists the help of his disciples Chibita and Moguramaru to get revenge on the sextuplets. Later, Chibita attempts to thwart Totoko's run as Class President.

Episode 15 - Chibita, Did You Turn Into a Dog? / The Suspicious Transfer Student

Chibita takes the place of Dekapan's trained dog "son" when circus ringmaster Iyami buys him for his circus. Later, a student with a padlocked hat transfers to the sextuplets' school, leading to a mystery of his identity.

Episode 16 - The Time Machine Sends Us to the Stone Age / The Junk Strategy

The Matsunos take a trip in a wacky inventor's time machine to the age of the dinosaurs, where they meet their friends' prehistoric counterparts. Meanwhile, neighbors Iyami and Chibita go to war with the Matsunos over trash disposal.

Episode 17 - Chika-chan and Chibita / Don't Wake The Sleeping Child

Chibita falls in love with snooty Chikako, but the sextuplets' faulty attempts at woo cause more than trouble for the little lovebirds. Meanwhile, the sextuplets watch over a sleepwalking boy who becomes violent when awoken.

Episode 18 - Suspicious Presents / See Doctor Chibita For Tooth Decay

A Santa Claus-like figure arrives in the town, in actuality a persona put on by burglar Moguramaru to hide stolen goods. Later, deranged dentist Chibita enacts periodontal violence against people with better teeth than him.

Episode 19 - Where's Chibita Going? / Chibita's Girlfriend

The sextuplets become victims of a vindictive clothesless Chibita, who tries to steal their clean clothes. Meanwhile, 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.

Episode 20 - Iyami the Rude Guest / Chibita the Sailor

The sextuplets' father invites work friend Iyami over for dinner, but chaos ensues in response to his disruptive behavior. Later, Chibita attempts to sneak onto an ocean liner under the guise of a sailor.

Episode 21 - Iyami in France / Dad Ran Away

Iyami runs a "genuine" French restaurant with Chibita, and receives criticism for his poor service and lack of research. Meanwhile, Mr. Matsuno resigns from his position as patriarch, and runs away.

Episode 22 - Episode 22

Episode 23 - Episode 23

Episode 24 - Episode 24

Episode 25 - Episode 25

Episode 26 - Episode 26

Episode 27 - Episode 27

Episode 28 - Episode 28

Episode 29 - Episode 29

Episode 30 - Episode 30

Episode 31 - Episode 31

Episode 32 - Episode 32

Episode 33 - Episode 33

Episode 34 - Episode 34

Episode 35 - Episode 35

Episode 36 - Episode 36

Episode 37 - Episode 37

Episode 38 - Episode 38

Episode 39 - Episode 39

Episode 40 - Episode 40

Episode 41 - Episode 41

Episode 42 - Episode 42

Episode 43 - Episode 43

Episode 44 - Episode 44

Episode 45 - Episode 45

Episode 46 - Episode 46

Episode 47 - Episode 47

Episode 48 - Episode 48

Episode 49 - Episode 49

Episode 50 - Episode 50

Episode 51 - Episode 51

Episode 52 - Episode 52

Episode 53 - Episode 53

Episode 54 - Episode 54

Episode 55 - Episode 55

Episode 56 - Episode 56

Episode 57 - Episode 57

Episode 58 - Episode 58

Episode 59 - Episode 59

Episode 60 - Episode 60