Osomatsu-kun (Season 1)

Sheeh! Sextuplets-zansu (Episode 1)

Writer: Hiroyuki Hoshiyama

Air date: 1988-02-13

Runtime: 24 min

Overview: The gaudy and untruthful Iyami comes to town, fashioning himself a salesman. After a botched robbery, he inadvertently becomes victim to teeth-regrowing medicine.

I've Had it With Fortune Telling-zansu! (Episode 2)

Writer: Yoshio Urasawa

Air date: 1988-02-20

Runtime: 24 min

Overview: After harassing Dayon the fortune-teller, Iyami awaits three bad things to befall him that day, as per Dayon's prediction.

Genius Iyami's Transformation Potion-zansu! (Episode 3)

Writer: Hiroyuki Hoshiyama

Air date: 1988-02-27

Runtime: 24 min

Overview: Iyami runs a shady clinic, but is pushed into failure by Dekapan's much more ethical office. To get revenge, him and Chibita cook up a transformation potion.

Sheee! I'm a Ballerina! (Episode 4)

Air date: 1988-03-05

Runtime: 24 min

Overview: Chibita is training to become Prima Donna in Iyami's ballet studio's big show. When one thing leads to another and he's ousted from his role by Osomatsu, Chibita throws away his heart (literally) and causes mischief for the big recital.

Chibita's Love Falls with the Flowers (Episode 5)

Writer: Sukehiro Tomita

Air date: 1988-03-12

Runtime: 24 min

Overview: Dekapan visits the sextuplets with his daughter -- not a human, but a pig. Osomatsu and Choromatsu cook up a scheme to trick Chibita, who has fallen in love with her not realizing what she truly is.

Profiting from Death Prayers-zansu! (Episode 6)

Air date: 1988-03-19

Runtime: 24 min

Overview: After dining and dashing for the umpteenth time, Iyami plans a scheme to fake his death and use the grievance money to skip town.

Chibita Becomes a Mama! (Episode 7)

Air date: 1988-03-26

Runtime: 24 min

Overview: Chibita finds an abandoned baby, but runs into financial difficulties alongside the discovery that the mother wants her baby back.

Transformation! Chibita's Amazing Hat (Episode 8)

Air date: 1988-04-02

Runtime: 24 min

Overview: After he graduates, Chibita is caught between the expectations of being a good boy or being a troublemaker. With the help of Iyami's newly-developed personality-switching hat, he keeps a relatively clean appearance, but trouble ensues once he takes it off.

Making Easy Money with a Secondhand Store-zansu! (Episode 9)

Air date: 1988-04-09

Runtime: 24 min

Overview: Iyami and Chibita sell used junk, but when they buy a wooden cabinet from the Matsunos that's worth a fortune, a battle ensues for who gets to claim the cash.

Shinigami Salesman From Hell! (Episode 10)

Air date: 1988-04-23

Runtime: 24 min

Overview: A candle-watching shinigami comes to town, and Iyami enlists his help in culling Osomatsu, who has recently come down with a life-threatening illness.

Even Behind Bars, Iyami Never Learns! (Episode 11)

Air date: 1988-04-30

Runtime: 24 min

Overview: Iyami and Chibita, prison inmates, make a grand escape from their sentence, but only one problem is in their way, aside from the police on their tail: they're chained together at the waist.

The Great Iyami-sensei, the Popular Author! (Episode 12)

Air date: 1988-05-07

Runtime: 24 min

Overview: Iyami, an amateur author who lives in poverty, strikes it rich when he sends in manuscripts that expose the many strange things about the people in town.

A Castle Moved In Next Door! (Episode 13)

Writer: Yoshio Urasawa

Air date: 1988-05-14

Runtime: 24 min

Overview: Lord Chibita, along with second-in-command Iyami, set up their Edo period-style headquarters in town, with the young Lord falling head-over-heels for Totoko.

Beat the Aliens! (Episode 14)

Air date: 1988-05-21

Runtime: 24 min

Overview: The sextuplets get temporarily kidnapped and discover a plot for aliens to take over the world. Osomatsu and Choromatsu get replaced, and it's up to the family to find out who the real kids are.

Getting Your Life Saved is Expensive-zansu! (Episode 15)

Air date: 1988-05-28

Runtime: 24 min

Overview: Iyami saves Osomatsu's life.

Saving? Energy Conservation? Mini-Sextuplets! (Episode 16)

Air date: 1988-06-04

Runtime: 24 min

Overview: Chibita hatches a plan with his scientist uncle to shrink the sextuplets to make him bigger in comparison.

Hatabō Musters Up Courage (Episode 17)

Writer: Yoshio Urasawa

Air date: 1988-06-11

Runtime: 24 min

Overview: After getting framed for one of Iyami's tricks, Hatabou tries to stand up for himself.

Chibita the Safecracker! (Episode 18)

Air date: 1988-06-25

Runtime: 24 min

Overview: Chibita is a former safecracker who's trying to go straight, but a detective, Iyami, keeps hounding him.

Switched Psyches! (Episode 19)

Air date: 1988-07-02

Runtime: 24 min

Overview: Dekapan invents a mysterious liquid that causes anyone doused with it and who bumps heads to switch minds, leading to all sorts of chaos for the neighbors and their plans.

Iyami, The Dangerous Watch Dealer! (Episode 20)

Air date: 1988-07-09

Runtime: 24 min

Overview: Iyami and Chibita build a bomb.

Friendship! Chibita and the Cat Thief! (Episode 21)

Air date: 1988-07-23

Runtime: 24 min

Overview: Chibita takes care of a cat.

Chibita is a Wandering Gunslinger (Episode 22)

Air date: 1988-07-30

Runtime: 24 min

Overview: A mysterious gunslinger, Chibita, shows up at the Dekapan Ranch just in time to drive off six bullying brothers.

The Great Detective! Hatabō-da jou! (Episode 23)

Air date: 1988-08-06

Runtime: 24 min

Overview: Rich guy Iyami's diamond dentures go missing, and it's up to Detective Hatabou to find the lost jewels and the culprit behind the thieving.

Iyami's Body is Full of Germs! (Episode 24)

Air date: 1988-08-13

Runtime: 24 min

Overview: Totoko becomes infected with personality-altering becteria from Iyami's body.

The Curse of Oden is Scary-zansu! (Episode 25)

Writer: Keiji Terui

Air date: 1988-08-27

Runtime: 24 min

Overview: After Iyami steals all of an oden vendor's stock and pins it on oden-loving Chibita, the tortured boy sets his aim on the sextuplets and Iyami in a slasher-style game of revenge.

Dad Can Quit Smoking (Episode 26)

Writer: Hiroyuki Hoshiyama

Air date: 1988-09-03

Runtime: 24 min

Overview: The Sextuplets try to help their Dad stop smoking.

The Fairy Tale of Outie Island! (Episode 27)

Writer: Miho Maruo

Air date: 1988-09-10

Runtime: 24 min

Overview: Dekapan and Hatabou try to make offerings to a stone god, while everyone else enjoys the good life.

Watch Out for Wild Iyami! (Episode 28)

Writer: Yoshio Urasawa

Air date: 1988-09-17

Runtime: 24 min

Overview: The Sextuplets and Totoko go camping.

It's Do or Die for an Insurance Agent! (Episode 29)

Writer: Keiji Terui

Air date: 1988-10-01

Runtime: 24 min

Overview: Iyami starts an insurance company.

Ninja Chibita is Here! (Episode 30)

Writer: Yoshio Urasawa

Air date: 1988-10-08

Runtime: 24 min

Overview: Chibita seeks vengeance through ninjutsu.

Up to Here with the Spirit of the Flower-zansu! (Episode 31)

Writer: Hiroyuki Hoshiyama

Air date: 1988-10-15

Runtime: 24 min

Overview: Chibita's kindness is rewarded by the spirit of a rose.

Totoko is the Number One Idol-zansu! (Episode 32)

Writer: Miho Maruo

Air date: 1988-10-22

Runtime: 24 min

Overview: When a new girl moves next door to the Sextuplets, Totoko is deposed as the neighborhood's number one idol.

Male Friendship is Hot-zansu! (Episode 33)

Writer: Keiji Terui

Air date: 1988-10-29

Runtime: 24 min

Overview: Iyami and Chibita are trapeze artists. Totoko the ringmaster's daughter, comes between them.

Dad is Dad! (Episode 34)

Writer: Yoshio Urasawa

Air date: 1988-11-05

Runtime: 24 min

Overview: Exhausted and feeling unloved by his six sons, Dad runs away from home and pledges to raise fellow runaway Chibita.

The Tomboy Princess of Dekapan Castle! (Episode 35)

Writer: Sukehiro Tomita

Air date: 1988-11-12

Runtime: 24 min

Overview: Minister Iyami plots to assassinate Princess Totoko so his son, Prince Hatabou, can take over.

It's Tough Being a Champion of Justice-zansu! (Episode 36)

Writer: Hiroyuki Hoshiyama

Air date: 1988-11-19

Runtime: 24 min

Overview: Iyami and Chibita become superheroes.

Chibita's Treasure Island (Episode 37)

Writer: Akira Shigino

Air date: 1988-11-26

Runtime: 24 min

Overview: Chibita sets out to find lost treasure, but soon gets captured by pirates.

Be Kind to the Elderly-zansu! (Episode 38)

Writer: Keiji Terui

Air date: 1988-12-03

Runtime: 24 min

Overview: Iyami and Chibita pretend to be a poor elderly couple to mooch off of Osomatsu's family.

Take Caution During a Raid-zansu! (Episode 39)

Writer: Kazuhito Kushima

Air date: 1988-12-10

Runtime: 24 min

Overview: When Hatabou commits seppuku Chibita plots his revenge on Iyami.

Babysitting is Hard Work-zansu! (Episode 40)

Writer: Keiji Terui

Air date: 1988-12-17

Runtime: 24 min

Overview: The Sextuplets are froced to babysit their Dad's Boss' son.

White Christmas of the Skyline (Episode 41)

Writer: Hiroyuki Hoshiyama

Air date: 1988-12-24

Runtime: 24 min

Overview: Chibita is a bellboy working at the Dayon Hotel when he takes in Totoko, a poor girl who's lost her beautiful singing voice.

Iyami's Shifty Business! (Episode 42)

Writer: Yoshio Urasawa

Air date: 1989-01-14

Runtime: 24 min

Overview: Iyami and Chibita swindle Dayon.

Win the Race by Cheating-zansu! (Episode 43)

Writer: Isao Shizuya

Air date: 1989-01-21

Runtime: 24 min

Overview: Everyone competes in a wacky car race to sweep the wealthy Totoko off her feet.

Iyami's Gibberish Japan-zansu! (Episode 44)

Writer: Hiroyuki Hoshiyama

Air date: 1989-01-28

Runtime: 24 min

Overview: French director Iyami and his cameraman Chibita travel to Japan to film a documentary on the "real Japan."

Ski Trips Are Tough-zansu! (Episode 45)

Writer: Miho Maruo

Air date: 1989-02-04

Runtime: 24 min

Overview: The Sextuplets go skiing with their instructor Iyami.

The Hot-Blooded Detective Chibita-zansu! (Episode 46)

Writer: Kazuhisa Sakaguchi

Air date: 1989-02-11

Runtime: 24 min

Overview: Detective Chibita is transferred to a town where oden is prohibited, but is sold in a black market controlled by a shady character.

Wealthy from the Lottery-zansu! (Episode 47)

Writer: Hiroyuki Hoshiyama

Air date: 1989-02-18

Runtime: 24 min

Overview: Iyami wins the lottery from a ticket he made Chibita purchase a year earlier, but he only has one day left to collect.

The Boys Learn Manners at a Zen Temple! (Episode 48)

Writer: Miho Maruo

Air date: 1989-02-25

Runtime: 24 min

Overview: The Sextuplets are sent to a zen temple to be straightened out by Iyami, a monk who's in it for the money.

The Arrogant Police Officer-zansu! (Episode 49)

Writer: Keiji Terui

Air date: 1989-03-04

Runtime: 24 min

Overview: Iyami is a police officer who isn't really good at his job.

Dinosaur Egg Omelet-zansu! (Episode 50)

Writer: Yoshio Urasawa

Air date: 1989-03-11

Runtime: 24 min

Overview: Chibita finds a baby T-Rex that he wants to keep as a pet.

What Happens at the Inn Stays at the Inn-zansu! (Episode 51)

Writer: Miho Maruo

Air date: 1989-03-18

Runtime: 24 min

Overview: Osomatsu's family goes on vacation to an inn that they realize is too expensive for them.

An Honest Iyami is Dangerous! (Episode 52)

Writer: Yoshio Urasawa

Air date: 1989-03-25

Runtime: 24 min

Overview: Hatabou creates an explosive lie detector for Iyami.

Brown-nosing with Golf-zansu! (Episode 53)

Writer: Hiroyuki Hoshiyama

Air date: 1989-04-01

Runtime: 24 min

Overview: Chibita has to decide whether Iyami or Osomatsu's Dad will get a promotion.

Iyami-san's Wedding! (Episode 54)

Writer: Keiji Terui

Air date: 1989-04-08

Runtime: 24 min

Overview: A woman falls in love with Iyami, but she doesn't know how poor he is.

Luck Ran Out on the Drive (Episode 55)

Air date: 1989-04-15

Runtime: 24 min

Overview: Dad and the boys run into trouble when they encounter Iyami on the road.

The Super-Rich Chibita-sama-zansu! (Episode 56)

Writer: Yoshio Urasawa

Air date: 1989-04-22

Runtime: 24 min

Overview: Iyami tries to change all the restaurants in town to oden shops in order to please the mega-rich Chibita.

That Bastard Pilot, Iyami-zansu! (Episode 57)

Writer: Keiji Terui

Air date: 1989-04-29

Runtime: 24 min

Overview: Iyami gets to pilot a rickety plane to Hawaii.

Sheee! A 50,000 Yen a Day Allowance! (Episode 58)

Writer: Hiroyuki Hoshiyama

Air date: 1989-05-06

Runtime: 24 min

Overview: Osomatsu gets adopted by Dekapan.

Hatabō is a Champion of Justice-dajou! (Episode 59)

Air date: 1989-05-13

Runtime: 24 min

Overview: Presidential candidate Iyami hires hitman, Hatabou, to take out his rival, Dayon.

The Revenge of Flying Chibita-zansu! (Episode 60)

Air date: 1989-05-20

Runtime: 24 min

Overview: Iyami and Chibita get revenge on the Sextuplets with remote-controlled model airplanes.

Which is More Important, Oden or Your First Love? (Episode 61)

Air date: 1989-05-27

Runtime: 24 min

Overview: Chibita is smitten with Jajako, Hatabou's cousin, but she hates his favorite thing in the world, oden.

Where Did Papa's Bonus Go? (Episode 62)

Air date: 1989-06-03

Runtime: 24 min

Overview: When Dad loses his bonus, suspicion quickly falls on Iyami, who's actually turned over a new leaf.

Sextuplets Squared! (Episode 63)

Air date: 1989-06-17

Runtime: 24 min

Overview: Iyami and Chibita duplicate the sextuplets.

Munchkin Monkey Chibita's Big Adventure! (Episode 64)

Air date: 1989-06-24

Runtime: 24 min

Overview: The powerful, rambunctious Chibita Songoku is imprisoned under a rock for 500 years before being rescued by an ambitious monk, Iyami.

Totoko, the Selfish Buddha! (Episode 65)

Air date: 1989-07-01

Runtime: 24 min

Overview: Iyami tries to steal Totoko Buddha's sutras so he can kickstart his own religion, but they're already held as collateral by moneyleader and Chibita's former master, Hatabou.

Iyami the Teacher's Throbbing Story! (Episode 66)

Air date: 1989-07-15

Runtime: 24 min

Overview: Nasty teacher Iyami is tormented by Chibita, the one student who dotes on him.

Life is Tough for Prince Chibita! (Episode 67)

Air date: 1989-07-22

Runtime: 24 min

Overview: Stifled by his royal burdens and constant handlers, Prince Chibiru slips the leash and finds action in a local department store as he gives chase to a pickpocket, Iyami.

Iyami's Fishy Beach House! (Episode 68)

Air date: 1989-07-29

Runtime: 24 min

Overview: Dad and the boys think they're getting a good deal by hanging out at Iyami's Beach House, but the owner and his assistant, Chibita, gouge their guests for everything they're worth.

Using Magic to Become Younger-zansu (Episode 69)

Air date: 1989-08-19

Runtime: 24 min

Overview: Mom and Dad get to start their lives over again thanks to a magic wish that reverts them to teenagers.

Boxing Hurts-zansu! (Episode 70)

Air date: 1989-08-26

Runtime: 24 min

Overview: Oden stand owner Chibita trains to fight the Akatsukadai boxing champion, Iyami.

Mom's a Born Saleswoman?! (Episode 71)

Air date: 1989-09-02

Runtime: 24 min

Overview: It's a war between the parents when Dad becomes frustrated that Mom is a better salesperson than he is.

Honeybee Chibita's Violin (Episode 72)

Air date: 1989-09-09

Runtime: 24 min

Overview: Honeybee Chibita is in search of his long-lost mother, but his quest is impeded by a trickster, Iyami Katydid, and the ravenous Dayon Spider.

Totoko, the Riddling Genius! (Episode 73)

Air date: 1989-09-16

Runtime: 24 min

Overview: Ridde Temple Master Dekapan gives monks Iyami and Chibita the challenge of stumping locals with riddles.

Detective Iyami versus Phantom Thief Dayon! (Episode 74)

Air date: 1989-09-23

Runtime: 24 min

Overview: Inspector Chibita teams up with "great detective" Iyami to capture Phantom Thief Dayon.

Iyami, 40 Years Later-zansu! (Episode 75)

Air date: 1989-10-14

Runtime: 24 min

Overview: 30 years later, the Sextuplets are middle-aged salarymen scientists slaving away under their boss, Dekapan, and his demanding daughter, Totoko

Deformed in Front of the Camera-zansu! (Episode 76)

Air date: 1989-10-21

Runtime: 24 min

Overview: Iyami tries to sell camera film for his failing company.

Cleany-kun, the Cleaning Robot! (Episode 77)

Air date: 1989-10-28

Runtime: 24 min

Overview: Dekapan invents a robot vaccum cleaner that goes out of control and threatens to destroy the country.

God, Make My Wish Come True! (Episode 78)

Writer: Keiji Terui

Air date: 1989-11-04

Runtime: 24 min

Overview: God (Dekapan) grants Chibita the power to make all of his wishes come true.

The Mother in Chibita's Imagination (Episode 79)

Writer: Miho Maruo

Air date: 1989-11-11

Runtime: 24 min

Overview: Chibita's mother comes back into his life by having him kidnapped away from Dekapan, the poor man who raised him.

Iyami's Hibernation Strategy-zansu (Episode 80)

Writer: Yoshio Urasawa

Air date: 1989-11-18

Runtime: 24 min

Overview: With winter on its way, Iyami wants to be jailed for the sake of shelter and warm meals, however all of his attempted crimes turn into good deeds.

Raking It In As a Quack! (Episode 81)

Writer: Keiji Terui

Air date: 1989-11-25

Runtime: 24 min

Overview: Would-be burglar Iyami is drafted into posing as the director of a hospital, a ruse that works until he's forced to treat a yakuza boss.

I Don't Want Nightmares-zansu! (Episode 82)

Writer: Yoshio Urasawa

Air date: 1989-12-02

Runtime: 24 min

Overview: Iyami is haunted in his dreams by the spirit of a vengeful samurai, Chibita.

Lions Are Scary When Angry-zansu! (Episode 83)

Writer: Miho Maruo

Air date: 1989-12-09

Runtime: 24 min

Overview: When Iyami's circus goes out of business, he gives the lion to the Osomatsu's family, which doesn't sit well with Chibita, the lion's only friend.

Hatabou in Mito Koumon! (Episode 84)

Writer: Hiroyuki Hoshiyama

Air date: 1989-12-16

Runtime: 24 min

Overview: In ancient Japan, secret retired vice-shogun Hatabou and his companions go up against crooked magistrate Iyami.

The Aliens Have Come Again! (Episode 85)

Writer: Hiroyuki Hoshiyama

Air date: 1989-12-23

Runtime: 24 min

Overview: To prepare for invading Earth, aliens abduct Iyami and sift through memories of his worst moments.

Iyami's Surefire Election Strategy-zansu! (Episode 86)

Writer: Yoshio Urasawa

Air date: 1989-12-30

Runtime: 23 min

Overview: When everyone has finally had it with them, Iyami and Chibita's only escape is a long swim across the Pacific.