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
Season 1
12 episodes
1. Sleepless Princess of the CastlePrincess 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.TV-14CC24minOct 6, 2020
2. The Princess and Furious FluffAs 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.TV-14CC24minOct 13, 2020
3. The Princess and Forbidden KnowledgePrincess Syalis is on the loose again meddling with forbidden magical items and causing total mayhem for the Demon Castle.TV-14CC24minOct 20, 2020
4. The Princess, Destruction, and a Short JourneyFed up with her circumstances at the Demon Castle, Princess Syalis goes to great lengths to add luxuries to her castle prison.TV-14CC24minOct 27, 2020
5. The Princess and Female WarriorsThe female unit, long deployed out in the field, has returned to the Demon Castle to get their first taste of Princess Syalis.TV-14CC24minNov 3, 2020
6. The Princess’ Unwavering ChoiceDawner 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.TV-14CC24minNov 10, 2020
7. Even More Sleepless Princess of the CastlePrincess Syalis wakes to find herself in a completely different castle! What happened and how will she return to the Demon Castle?TV-14CC24minNov 17, 2020
8. The Princess and the Frightful Demon NightmareBack at the Demon Castle, Princess Syalis interrupts an important meeting to share about her haunted dreams.TV-14CC24minNov 24, 2020
9. The Princess and Hostage Training WeekIt’s time for Princess Syalis to start acting like a proper hostage, so the demon king issues a decree to help change that.TV-14CC24minDec 1, 2020
10. The Princess in EndopolisPrinces Syalis is determined to get her hands on the latest and greatest sleep product, but it’s only available in the Human Realm.TV-14CC24minDec 8, 2020
11. The Princess and Troubling DreamsPrincess Syalis feels tired no matter how much sleep she gets, and her troubling dreams aren’t helping.TV-14CC24minDec 15, 2020
12. Sleeping Princess of the Demon CastleDespite living as a captive in the Demon Realm, the princess writes a letter to Santa. The letter’s contents shock the demon king.TV-14CC24minDec 22, 2020
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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.
Creators and cast
- Created by
- Daijiro Morita, Kaoru Wada, Yoshikazu Beniya, Aya Iizuka
