Sleepy Princess in the Demon Castle

Sleepy Princess in the Demon Castle

魔王城でおやすみ
Ended First aired 06/Oct/2020 Japan Japanese 2 season(s) 47 episode(s)
AnimationComedySci-Fi & Fantasy
When young Princess Syalis is kidnapped and imprisoned by the Demon King, she's rather indifferent about her situation. But she quickly comes to a terrible realisation—she can't sleep soundly in such an uncomfortable bed! She soon escapes her cell and sets off in search of ways to improve her sleep quality, leaving the castle's inhabitants, and even the Demon King himself, scrambling to keep the unruly princess out of trouble during her chaotic adventures.
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Source: Asia/Tokyo · Your timezone: America/New_York

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Show Insights

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TimeScore 33% Skip It
Binge Meter 48% Slow Burn
Episode Pulse Quiet 40% activity score
Drop Rate 0% Very Low

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Seasons & Episodes

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Season 1 · Season 1
12 episode(s) · Air date: 06/Oct/2020
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Season Overview

A drowsy human princess roams the demon's castle where she's held prisoner, trying to find a comfortable place to get a good night's sleep.

Season Overview

A drowsy human princess roams the demon's castle where she's held prisoner, trying to find a comfortable place to get a good night's sleep.

S1E12
Sleeping Princess of the Demon Castle
Air date: 22/Dec/2020 · Time: 02:00 · Runtime: 24 min
Summary

Despite living as a captive in the Demon Realm, the princess writes a letter to Santa. The letter’s contents shock the demon king.

Summary

Despite living as a captive in the Demon Realm, the princess writes a letter to Santa. The letter’s contents shock the demon king.

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S1E10
The Princess in Endopolis
Air date: 08/Dec/2020 · Time: 02:00 · Runtime: 24 min
Summary

Princes Syalis is determined to get her hands on the latest and greatest sleep product, but it’s only available in the Human Realm.

Summary

Princes Syalis is determined to get her hands on the latest and greatest sleep product, but it’s only available in the Human Realm.

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S1E9
The Princess and Hostage Training Week
Air date: 01/Dec/2020 · Time: 02:00 · Runtime: 24 min
Summary

It’s time for Princess Syalis to start acting like a proper hostage, so the demon king issues a decree to help change that.

Summary

It’s time for Princess Syalis to start acting like a proper hostage, so the demon king issues a decree to help change that.

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S1E7
Even More Sleepless Princess of the Castle
Air date: 17/Nov/2020 · Time: 02:00 · Runtime: 24 min
Summary

Princess Syalis wakes to find herself in a completely different castle! What happened and how will she return to the Demon Castle?

Summary

Princess Syalis wakes to find herself in a completely different castle! What happened and how will she return to the Demon Castle?

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S1E6
The Princess’ Unwavering Choice
Air date: 10/Nov/2020 · Time: 02:00 · Runtime: 24 min
Summary

Dawner the Hero is having more trouble than expected on his journey to the Demon Castle, so the demon higher ups decide to take some action.

Summary

Dawner the Hero is having more trouble than expected on his journey to the Demon Castle, so the demon higher ups decide to take some action.

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S1E5
The Princess and Female Warriors
Air date: 03/Nov/2020 · Time: 02:00 · Runtime: 24 min
Summary

The female unit, long deployed out in the field, has returned to the Demon Castle to get their first taste of Princess Syalis.

Summary

The female unit, long deployed out in the field, has returned to the Demon Castle to get their first taste of Princess Syalis.

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S1E4
The Princess, Destruction, and a Short Journey
Air date: 27/Oct/2020 · Time: 02:00 · Runtime: 24 min
Summary

Fed up with her circumstances at the Demon Castle, Princess Syalis goes to great lengths to add luxuries to her castle prison.

Summary

Fed up with her circumstances at the Demon Castle, Princess Syalis goes to great lengths to add luxuries to her castle prison.

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S1E3
The Princess and Forbidden Knowledge
Air date: 20/Oct/2020 · Time: 02:00 · Runtime: 24 min
Summary

Princess Syalis is on the loose again meddling with forbidden magical items and causing total mayhem for the Demon Castle.

Summary

Princess Syalis is on the loose again meddling with forbidden magical items and causing total mayhem for the Demon Castle.

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S1E2
The Princess and Furious Fluff
Air date: 13/Oct/2020 · Time: 02:00 · Runtime: 24 min
Summary

As Dawner the Hero faces perilous obstacles to rescue Princess Syalis, the princess continues to find creative ways to sleep more comfortably at the Demon Castle.

Summary

As Dawner the Hero faces perilous obstacles to rescue Princess Syalis, the princess continues to find creative ways to sleep more comfortably at the Demon Castle.

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S1E1
Sleepless Princess of the Castle
Air date: 06/Oct/2020 · Time: 02:00 · Runtime: 24 min
Summary

Princess Syalis is abducted from her home of the Nation of Goodereste by Twilight the Demon King. Despite the horrors lurking in the Demon Castle, all Princess Syalis wants is a good night’s sleep.

Summary

Princess Syalis is abducted from her home of the Nation of Goodereste by Twilight the Demon King. Despite the horrors lurking in the Demon Castle, all Princess Syalis wants is a good night’s sleep.

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Season 0 · Specials
35 episode(s) · Air date: 08/Oct/2020
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Season Overview

Mini: Chibi shorts released on the anime's official Twitter page. Live 2D: Short animations of Princess Syalis sleep talking released on the anime's official Twitter page.

Season Overview

Mini: Chibi shorts released on the anime's official Twitter page. Live 2D: Short animations of Princess Syalis sleep talking released on the anime's official Twitter page.

Cast

Main cast members.

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Inori Minase
Inori Minase
Princess Syalis (voice)
Kaito Ishikawa
Kaito Ishikawa
Demon Cleric (voice)
Yoshitsugu Matsuoka
Yoshitsugu Matsuoka
Demon King Tasogare (voice)
Hiro Shimono
Hiro Shimono
The Hero Akatsuki (voice)
Rikiya Koyama
Rikiya Koyama
Majiro the Hedgehog (voice)
Kouichi Souma
Kouichi Souma
Frankenzombie (voice) / Ghost Wrapping Paper (voice)
Junichi Suwabe
Junichi Suwabe
Caesar Magician (voice)
Shinya Takahashi
Shinya Takahashi
Goblin Serf (voice)
Chikahiro Kobayashi
Chikahiro Kobayashi
Red Siberian (voice)
Ayane Sakura
Ayane Sakura
Aladdif (voice)
Sayaka Ohara
Sayaka Ohara
Harpy (voice)
Takeo Otsuka
Takeo Otsuka
Poseidon (voice)
Masashi Yamane
Masashi Yamane
Minotauro (voice)
Takaya Kuroda
Takaya Kuroda
Flame Poison Dragon (voice)
Shin-ichiro Miki
Shin-ichiro Miki
Hypnos (voice)
Kisho Taniyama
Kisho Taniyama
Hades (voice)

Crew

Creators, directors, writers, and production crew.

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Chieko Nakamura
Art Designer
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Takafumi Kuwano
Graphic Designer
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Megumi Matsumoto
Prop Designer
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Mitsue Yamasaki
Series Director, Storyboard Artist
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Kunihiko Ito
Director of Photography
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Geisei Morita
Director
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Hitomi Ezoe
Director
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Sumie Noro
Director
Takaharu Ookuma
Takaharu Ookuma
Director
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Tatsuya Nokimori
Director
Yasufumi Soejima
Yasufumi Soejima
Director
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Yoshiyuki Shirahata
Director

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