Beelzebub

Beelzebub (2011 – 2012)

2011 • 1 season • Animation, Comedy • TV-MA

On August 9, 2026

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12.0 Attention Score

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Episode 12 — I Won't Let You Sleep Tonight

Season 1 • Beelzebub

Released: 2011-04-10 • Animation/Comedy/Drama

80%

User score

Beelzebub has been crying all night for the past three nights, which is causing Oga and the whole neighborhood to get very little sleep. Wanting to stop his night crying to avoid being chased out of their house, the Oga family attempt to play with Beelzebub all day in order to tire him out come nighttime. Despite managing to get him to sleep, Beelzebub still wakes up and cries in the middle of the night. After Oga spends the day dealing with a sleep deprived Tōhōshinki, Hilda brings a toy that calms Beelzebub down, but is even noisier than his crying.

Episodes

Episode 1
I Picked Up the Demon King
2011-01-09

Episode 2
I Became a Gang Leader with a Child
2011-01-16

Episode 3
Are There Any Strong, Ruthless Bastards Around?
2011-01-23

Episode 4
There Is One Second Before the Demon Lord's Floods Burst Forth
2011-01-30

Episode 5
Money can buy anything
2011-02-06

Episode 6
Toys Have Arrived from the Demon World / We Played Doctor
2011-02-13

Episode 7
The Demon Lord makes his Park Debut
2011-02-20

Episode 8
We Meet Again
2011-02-27

Episode 9
Love is a Hurricane
2011-03-06

Episode 10
A Disciple Was Gained
2011-03-27

Episode 11
There was Something Money Could not Buy
2011-04-03

Episode 12
I Won't Let You Sleep Tonight
2011-04-10

Episode 13
Baby Beel's Assessment Test / Hilda: Dear Great Demon Lord
2011-04-17

Episode 14
Is There a Special Move?
2011-04-24

Episode 15
The Delinquents Have Changed Into Swimsuits
2011-05-01

Episode 16
You're Not a Bad Specimen of a Man
2011-05-08

Episode 17
How About Some Demon World Homework?
2011-05-15

Episode 18
I Quit being the Baby on Back Brawler
2011-05-22

Episode 19
The Doctor Has Arrived
2011-05-29

Episode 20
Everyone Assemble
2011-06-05

Episode 21
Who Do You Think Is Ishiyama's Strongest?
2011-06-12

Episode 22
Secluded Mountain Training
2011-06-19

Episode 23
You Kidding Me? The Demon World
2011-06-26

Episode 24
Welcome Back, Demon World!
2011-07-03

Episode 25
New Semester Started
2011-07-10

Episode 26
May I Call You Brother?
2011-07-17

Episode 27
Called the Magical Girl
2011-07-24

Episode 28
Let's All Get Physicals
2011-07-31

Episode 29
What Are the 6 Holy Knights?
2011-08-07

Episode 30
Who Could the 6 Holy Knights Be?
2011-08-14

Episode 31
No Conclusion Was Reached!
2011-08-28

Episode 32
What Has the Transfer Girl Done?
2011-09-04

Episode 33
There Are Wounds in the Past
2011-09-11

Episode 34
Maids Run Amok
2011-09-18

Episode 35
Time for the Game to Begin!
2011-09-25

Episode 36
The Victory has Finally Arrived
2011-10-02

Episode 37
This Man is a Teacher
2011-10-09

Episode 38
The Sibling Rivalry Has Begun
2011-10-16

Episode 39
His Brother Was a Crybaby
2011-10-23

Episode 40
No Shirt, No Shoes, No Assassins
2011-10-30

Episode 41
On the Brink! What'll We Do?
2011-11-06

Episode 42
It's Time to Train
2011-11-13

Episode 43
Where Did the Older Brother Disappear To?
2011-11-20

Episode 44
I Have to Get Stronger
2011-11-27

Episode 45
There's One Day and 1 Hour Left Until the Game
2011-12-04

Episode 46
Burn, Super Combination!
2011-12-11

Episode 47
Sorry to Have Kept You Waiting
2011-12-18

Episode 48
I'm His Parent
2011-12-25

Episode 49
Beelzebub's New Year's Special! Beelbeel Journey to the West!
2012-01-08

Episode 50
Today I'm Different on the Inside
2012-01-15

Episode 51
Komainu-sama is Watching You
2012-01-22

Episode 52
And Then There Were No Delinquents
2012-01-29

Episode 53
Baby Beel's First Conquest / Furuichi Falls in Love
2012-02-05

Episode 54
Black Baby Beel Grows Up!
2012-02-12

Episode 55
I Have Lost My Pompadour / The Great Demon Lord Has Come
2012-02-19

Episode 56
Are You a Traitor? / Is This a Job for Men?
2012-02-26

Episode 57
Won't You Eat a Manju? / Won't You Get in a Mixed Bath?
2012-03-04

Episode 58
Akumano Academy is Open!
2012-03-11

Episode 59
We're the Strongest!
2012-03-18

Episode 60
I Won't Say Goodbye
2012-03-25

Information

Episode air date	10.04.2011
Episode runtime	25 min
Episode rating	8.00
Genres	Animation / Comedy / Drama
TMDB series rating	8.3
IMDb series rating	7.4
Series status	Ended
Age rating	17+
Country	JP

Cast

Miyuki Sawashiro

Miyuki Sawashiro
Beelbou (voice)

Katsuyuki Konishi

Katsuyuki Konishi
Oga Tatsumi (voice)

Shizuka Itoh
Hilda Garde (voice)

Takahiro Mizushima

Takahiro Mizushima
Furuichi Takayuki (voice)

Aki Toyosaki
Aoi Kunieda (voice)

Daisuke Hirakawa

Daisuke Hirakawa
Alex Rodriguez Ichirou Shinjou (voice)

Daisuke Kishio
Shintarou Natsume (voice)

Haruna Ikezawa
Shizuka Nanami (voice)

Hiroki Takahashi

Hiroki Takahashi
Daimao (voice)

Kazuhiro Yamaji

Kazuhiro Yamaji
Jabberwock (voice)

Keiichi Nakagawa

Keiichi Nakagawa
Mitsuteru Sakaki (voice)

Kenji Fukuda
Kaname Izuma (voice)

Nobuhiko Okamoto

Nobuhiko Okamoto
Hisaya Miki (voice)

Seiro Ogino
Tatsuya Himekawa (voice)

Shinshu Fuji
Saotome Zenjuurou (voice)

Shinya Takahashi

Shinya Takahashi
Gou Hiromichi (voice)

Tomokazu Seki
Hidetora Toujou (voice)

Tomokazu Sugita

Tomokazu Sugita
Hajime Kanzaki (voice)

Tomomichi Nishimura

Tomomichi Nishimura
Behemoth (voice)

Wataru Takagi
Bathym de Emna Alaindelon (voice)

Sayaka Kinoshita

Sayaka Kinoshita
En-Oh (voice)

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