Playback is currently unavailable for S1 E9 · The Princess and Hostage Training Week. Episode details remain available below.
Sleepy Princess in the Demon Castle
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.
- Cast:
- Inori Minase, Kaito Ishikawa, Yoshitsugu Matsuoka, Hiro Shimono
- Language:
- Japanese
- Country:
- Japan
- Network:
- TV Tokyo
Episode guide
Seasons
Season 1
Episodes
E01
Episode 1
★ 6.3Sleepless Princess of the Castle
2020-10-06 · 24mPrincess 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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E02
Episode 2
★ 6.3The Princess and Furious Fluff
2020-10-13 · 24mAs 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.
Watch progress · Not tracked
E03
Episode 3
★ 6.5The Princess and Forbidden Knowledge
2020-10-20 · 24mPrincess Syalis is on the loose again meddling with forbidden magical items and causing total mayhem for the Demon Castle.
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E04
Episode 4
★ 6.5The Princess, Destruction, and a Short Journey
2020-10-27 · 24mFed 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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E05
Episode 5
★ 6.5The Princess and Female Warriors
2020-11-03 · 24mThe 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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E06
Episode 6
★ 6.5The Princess’ Unwavering Choice
2020-11-10 · 24mDawner 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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E07
Episode 7
★ 6.5Even More Sleepless Princess of the Castle
2020-11-17 · 24mPrincess 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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E08
Episode 8
★ 6.5The Princess and the Frightful Demon Nightmare
2020-11-24 · 24mBack at the Demon Castle, Princess Syalis interrupts an important meeting to share about her haunted dreams.
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E09
Episode 9
★ 6.5The Princess and Hostage Training Week
2020-12-01 · 24mIt’s time for Princess Syalis to start acting like a proper hostage, so the demon king issues a decree to help change that.
Current episode
E10
Episode 10
★ 6.5The Princess in Endopolis
2020-12-08 · 24mPrinces 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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E11
Episode 11
★ 6.0The Princess and Troubling Dreams
2020-12-15 · 24mPrincess Syalis feels tired no matter how much sleep she gets, and her troubling dreams aren’t helping.
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E12
Episode 12
★ 6.0Sleeping Princess of the Demon Castle
2020-12-22 · 24mDespite living as a captive in the Demon Realm, the princess writes a letter to Santa. The letter’s contents shock the demon king.
Watch progress · Not trackedCast
Inori Minase
Princess Syalis (voice)
Kaito Ishikawa
Demon Cleric (voice)
Yoshitsugu Matsuoka
Demon King Tasogare (voice)
Hiro Shimono
The Hero Akatsuki (voice)
Rikiya Koyama
Majiro the Hedgehog (voice)
Kouichi Souma
Frankenzombie (voice) / Ghost Wrapping Paper (voice)
Junichi Suwabe
Caesar Magician (voice)
Shinya Takahashi
Goblin Serf (voice)
Chikahiro Kobayashi
Red Siberian (voice)
Sayaka Ohara
Harpy (voice)
