Osomatsu-kun S1E52 — An Honest Iyami is Dangerous!
Osomatsu-kun•Season 1•Episode 52

An Honest Iyami is Dangerous!

Mar 25, 198924 min
Discussion

After Iyami's dishonesty spurs trouble for Dekapan's Restaurant, the Hatabou Research Institute creates an explosive lie-detector belt that's forced onto the serial liar. But when Iyami gets the town into warzone-level trouble for his honesty, Dekapan must stop the danger he has inadvertently caused.

Directed byYumiko Suda
Written byYoshio Urasawa

Seasons1

Season 1 Episodes86

Sheeh! Sextuplets-zansu stillE1

Sheeh! Sextuplets-zansu

I've Had it With Fortune Telling-zansu! stillE2

I've Had it With Fortune Telling-zansu!

Genius Iyami's Transformation Potion-zansu! stillE3

Genius Iyami's Transformation Potion-zansu!

Sheee! I'm a Ballerina! stillE4

Sheee! I'm a Ballerina!

Chibita's Love Falls with the Flowers stillE5

Chibita's Love Falls with the Flowers

Profiting from Death Prayers-zansu! stillE6

Profiting from Death Prayers-zansu!

Chibita Becomes a Mama! stillE7

Chibita Becomes a Mama!

Transformation! Chibita's Amazing Hat stillE8 10.0

Transformation! Chibita's Amazing Hat

Making Easy Money with a Secondhand Store-zansu! stillE9

Making Easy Money with a Secondhand Store-zansu!

Shinigami Salesman From Hell! stillE10

Shinigami Salesman From Hell!

Even Behind Bars, Iyami Never Learns! stillE11

Even Behind Bars, Iyami Never Learns!

The Great Iyami-sensei, the Popular Author! stillE12

The Great Iyami-sensei, the Popular Author!

A Castle Moved In Next Door! stillE13

A Castle Moved In Next Door!

Beat the Aliens! stillE14

Beat the Aliens!

Getting Your Life Saved is Expensive-zansu! stillE15

Getting Your Life Saved is Expensive-zansu!

Saving? Energy Conservation? Mini-Sextuplets! stillE16

Saving? Energy Conservation? Mini-Sextuplets!

Hatabō Musters Up Courage stillE17

Hatabō Musters Up Courage

Chibita the Safecracker! stillE18

Chibita the Safecracker!

Switched Psyches! stillE19

Switched Psyches!

Iyami, The Dangerous Watch Dealer! stillE20

Iyami, The Dangerous Watch Dealer!

Friendship! Chibita and the Cat Thief! stillE21

Friendship! Chibita and the Cat Thief!

Chibita is a Wandering Gunslinger stillE22

Chibita is a Wandering Gunslinger

The Great Detective! Hatabō-da jou! stillE23

The Great Detective! Hatabō-da jou!

Iyami's Body is Full of Germs! stillE24

Iyami's Body is Full of Germs!

The Curse of Oden is Scary-zansu! stillE25

The Curse of Oden is Scary-zansu!

Dad Can Quit Smoking stillE26

Dad Can Quit Smoking

The Fairy Tale of Outie Island! stillE27

The Fairy Tale of Outie Island!

Watch Out for Wild Iyami! stillE28

Watch Out for Wild Iyami!

It's Do or Die for an Insurance Agent! stillE29

It's Do or Die for an Insurance Agent!

Ninja Chibita is Here! stillE30

Ninja Chibita is Here!

Up to Here with the Spirit of the Flower-zansu! stillE31

Up to Here with the Spirit of the Flower-zansu!

Totoko is the Number One Idol-zansu! stillE32

Totoko is the Number One Idol-zansu!

Male Friendship is Hot-zansu! stillE33

Male Friendship is Hot-zansu!

Dad is Dad! stillE34

Dad is Dad!

The Tomboy Princess of Dekapan Castle! stillE35

The Tomboy Princess of Dekapan Castle!

It's Tough Being a Champion of Justice-zansu! stillE36

It's Tough Being a Champion of Justice-zansu!

Chibita's Treasure Island stillE37

Chibita's Treasure Island

Be Kind to the Elderly-zansu! stillE38

Be Kind to the Elderly-zansu!

Take Caution During a Raid-zansu! stillE39

Take Caution During a Raid-zansu!

Babysitting is Hard Work-zansu! stillE40

Babysitting is Hard Work-zansu!

White Christmas of the Skyline stillE41

White Christmas of the Skyline

Iyami's Shifty Business! stillE42

Iyami's Shifty Business!

Win the Race by Cheating-zansu! stillE43

Win the Race by Cheating-zansu!

Iyami's Gibberish Japan-zansu! stillE44

Iyami's Gibberish Japan-zansu!

Ski Trips Are Tough-zansu! stillE45

Ski Trips Are Tough-zansu!

The Hot-Blooded Detective Chibita-zansu! stillE46

The Hot-Blooded Detective Chibita-zansu!

Wealthy from the Lottery-zansu! stillE47

Wealthy from the Lottery-zansu!

Even the Sextuplets Become Good Boys at a Zen Temple! stillE48

Even the Sextuplets Become Good Boys at a Zen Temple!

The Arrogant Police Officer-zansu! stillE49

The Arrogant Police Officer-zansu!

Dinosaur Egg Omelet-zansu! stillE50

Dinosaur Egg Omelet-zansu!

What Happens at the Inn Stays at the Inn-zansu! stillE51

What Happens at the Inn Stays at the Inn-zansu!

An Honest Iyami is Dangerous! stillE52Now viewing

An Honest Iyami is Dangerous!

Brown-nosing with Golf-zansu! stillE53

Brown-nosing with Golf-zansu!

Iyami-san's Wedding! stillE54

Iyami-san's Wedding!

Luck Ran Out on the Drive stillE55

Luck Ran Out on the Drive

The Super-Rich Chibita-sama-zansu! stillE56

The Super-Rich Chibita-sama-zansu!

That Bastard Pilot, Iyami-zansu! stillE57

That Bastard Pilot, Iyami-zansu!

Sheee! A 50,000 Yen a Day Allowance! stillE58

Sheee! A 50,000 Yen a Day Allowance!

Hatabō is a Champion of Justice-dajou! stillE59

Hatabō is a Champion of Justice-dajou!

The Revenge of Flying Chibita-zansu! stillE60

The Revenge of Flying Chibita-zansu!

Which is More Important, Oden or Your First Love? stillE61

Which is More Important, Oden or Your First Love?

Where Did Papa's Bonus Go? stillE62

Where Did Papa's Bonus Go?

Sextuplets Squared! stillE63

Sextuplets Squared!

Munchkin Monkey Chibita's Big Adventure! stillE64

Munchkin Monkey Chibita's Big Adventure!

Totoko, the Selfish Buddha! stillE65

Totoko, the Selfish Buddha!

Iyami the Teacher's Throbbing Story! stillE66

Iyami the Teacher's Throbbing Story!

Life is Tough for Prince Chibita! stillE67

Life is Tough for Prince Chibita!

Iyami's Fishy Beach House! stillE68

Iyami's Fishy Beach House!

Using Magic to Become Younger-zansu stillE69

Using Magic to Become Younger-zansu

Boxing Hurts-zansu! stillE70

Boxing Hurts-zansu!

Mom's a Born Saleswoman?! stillE71

Mom's a Born Saleswoman?!

Honeybee Chibita's Violin stillE72

Honeybee Chibita's Violin

Totoko, the Riddling Genius! stillE73

Totoko, the Riddling Genius!

Detective Iyami versus Phantom Thief Dayon! stillE74

Detective Iyami versus Phantom Thief Dayon!

Iyami, 40 Years Later-zansu! stillE75

Iyami, 40 Years Later-zansu!

Deformed in Front of the Camera-zansu! stillE76

Deformed in Front of the Camera-zansu!

Cleany-kun, the Cleaning Robot! stillE77

Cleany-kun, the Cleaning Robot!

God, Make My Wish Come True! stillE78

God, Make My Wish Come True!

The Mother in Chibita's Imagination stillE79

The Mother in Chibita's Imagination

Iyami's Hibernation Strategy-zansu stillE80

Iyami's Hibernation Strategy-zansu

Raking It In As a Quack! stillE81

Raking It In As a Quack!

I Don't Want Nightmares-zansu! stillE82

I Don't Want Nightmares-zansu!

Lions Are Scary When Angry-zansu! stillE83

Lions Are Scary When Angry-zansu!

Hatabou in Mito Koumon! stillE84

Hatabou in Mito Koumon!

The Aliens Have Come Again! stillE85

The Aliens Have Come Again!

Iyami's Surefire Election Strategy-zansu! stillE86

Iyami's Surefire Election Strategy-zansu!

Cast4

Kaneta Kimotsuki

Kaneta Kimotsuki

Iyami (voice)

Mayumi Tanaka

Mayumi Tanaka

Chibita (voice)

Y

Yo Inoue

Osomatsu Matsuno (voice)

Tōru Ōhira

Tōru Ōhira

Dekapan

Crew9

T

Takashi Watanabe

Storyboard Artist

Yoshio Urasawa

Yoshio Urasawa

Writer

Y

Yumiko Suda

Animation Director

Masaaki Yuasa

Masaaki Yuasa

Key Animation

M

Mariko Iioka

Key Animation

E

Etsuko Iiguchi

Key Animation

T

Toshihisa Kaiya

Key Animation

T

Teruko Okao

Key Animation

Y

Yumiko Suda

Director

Discussion

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Episode Summary

"An Honest Iyami is Dangerous!" is episode 52 of Osomatsu-kun season 1. Directed by Yumiko Suda and written by Yoshio Urasawa, it aired on March 25, 1989.