Inori Minase
Princess Syalis (voice)
Series
Watch Sleepy Princess in the Demon Castle (2020) Online
Synopsis
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.
Episodes
Season 1
PreviousNext
1. Sleepless Princess of the CastleNow viewing2020-10-0624m6.3Princess 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.
2. The Princess and Furious Fluff2020-10-1324m6.3As 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.
3. The Princess and Forbidden Knowledge2020-10-2024m6.5Princess Syalis is on the loose again meddling with forbidden magical items and causing total mayhem for the Demon Castle.
4. The Princess, Destruction, and a Short Journey2020-10-2724m6.5Fed up with her circumstances at the Demon Castle, Princess Syalis goes to great lengths to add luxuries to her castle prison.
5. The Princess and Female Warriors2020-11-0324m6.5The female unit, long deployed out in the field, has returned to the Demon Castle to get their first taste of Princess Syalis.
6. The Princess’ Unwavering Choice2020-11-1024m6.5Dawner 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.
7. Even More Sleepless Princess of the Castle2020-11-1724m6.5Princess Syalis wakes to find herself in a completely different castle! What happened and how will she return to the Demon Castle?
8. The Princess and the Frightful Demon Nightmare2020-11-2424m6.5Back at the Demon Castle, Princess Syalis interrupts an important meeting to share about her haunted dreams.
9. The Princess and Hostage Training Week2020-12-0124m6.5It’s time for Princess Syalis to start acting like a proper hostage, so the demon king issues a decree to help change that.
10. The Princess in Endopolis2020-12-0824m6.5Princes Syalis is determined to get her hands on the latest and greatest sleep product, but it’s only available in the Human Realm.
11. The Princess and Troubling Dreams2020-12-1524m6.0Princess Syalis feels tired no matter how much sleep she gets, and her troubling dreams aren’t helping.
12. Sleeping Princess of the Demon Castle2020-12-2224m6.0Despite living as a captive in the Demon Realm, the princess writes a letter to Santa. The letter’s contents shock the demon king.
Cast
Top Billed Cast
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)
Ayane Sakura
Aladdif (voice)
Takeo Otsuka
Poseidon (voice)
Masashi Yamane
Minotauro (voice)
Takaya Kuroda
Flame Poison Dragon (voice)
Sayaka Ohara
Neo Alraune (voice)
Shin-ichiro Miki
Hypnos (voice)
Kisho Taniyama
Hades (voice)
Availability
Where To Watch Legally
Crunchyroll
Crunchyroll Amazon Channel
Amazon Video
Apple TV StoreStreaming availability data provided by JustWatch.
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FAQ
Frequently Asked Questions
Is Sleepy Princess in the Demon Castle available to watch online?
Yes - see the "Where to watch legally" section on this page for streaming, rental and purchase options.
How many seasons does Sleepy Princess in the Demon Castle have?
Sleepy Princess in the Demon Castle has 1 season and 12 episodes.
When did Sleepy Princess in the Demon Castle first air?
Sleepy Princess in the Demon Castle first aired in 2020.
Is Sleepy Princess in the Demon Castle still running?
Sleepy Princess in the Demon Castle's status on TMDB is: Ended.
What genre is Sleepy Princess in the Demon Castle?
Sleepy Princess in the Demon Castle is classified as Animation, Comedy, Sci-Fi & Fantasy.