Genres
Networks
Sleepy Princess in the Demon Castle (魔王城でおやすみ)
Overview
Syalis is a princess. A really cute one. When she gets kidnapped by the Demon King as a hostage, she's stuck in a castle full of demons, waiting to be rescued by her knight in shining armor. So what does she do? What any of us would. Take a nap—on a pillow she fashioned from her Teddy Demon guards. Duh.
Key Crew
Producer: Daijiro Morita
Top Cast
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)
Seasons
Season 0 (2020)
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.
35 episodes
Episodes
Episode 1: Mini 01
2020-10-08Episode 2: Mini 02
2020-10-15Episode 3: Mini 03
2020-10-22Episode 4: Mini 04
2020-10-29Episode 5: Mini 05
2020-11-05Episode 6: Mini 06
2020-11-12Episode 7: Mini 07
2020-11-19Episode 8: Mini 08
2020-11-26Episode 9: Mini 09
2020-12-03Episode 10: Mini 10
2020-12-10Episode 11: Mini 11
2020-12-17Episode 12: Mini 12
2020-12-24Episode 13: Live 2D - 01
2020-08-30Episode 14: Live 2D - 02
2020-09-02Episode 15: Live 2D - 03
2020-09-06Episode 16: Live 2D - 04
2020-09-09Episode 17: Live 2D - 05
2020-09-13Episode 18: Live 2D - 06
2020-09-16Episode 19: Live 2D - 07
2020-09-20Episode 20: Live 2D - 08
2020-09-23Episode 21: Live 2D - 09
2020-09-27Episode 22: Live 2D - 10
2020-09-30Episode 23: Live 2D - 11
2020-10-04Episode 24: Live 2D - 12
2020-10-11Episode 25: Live 2D - 13
2020-10-17Episode 26: Live 2D - 14
2020-10-24Episode 27: Live 2D - 15
2020-10-31Episode 28: Live 2D - 16
2020-11-07Episode 29: Live 2D - 17
2020-11-14Episode 30: Live 2D - 18
2020-11-21Episode 31: Live 2D - 19
2020-11-28Episode 32: Live 2D - 20
2020-12-05Episode 33: Live 2D - 21
2020-12-12Episode 34: Live 2D - 22
2020-12-19Episode 35: Live 2D - 23
2020-12-26
Season 1 (2020)
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.
12 episodes
Episodes
Episode 1: Sleepless Princess of the Castle
2020-10-06Princess 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.
Runtime: 24 minEpisode 2: The Princess and Furious Fluff
2020-10-13As 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.
Runtime: 24 minEpisode 3: The Princess and Forbidden Knowledge
2020-10-20Princess Syalis is on the loose again meddling with forbidden magical items and causing total mayhem for the Demon Castle.
Runtime: 24 minEpisode 4: The Princess, Destruction, and a Short Journey
2020-10-27Fed up with her circumstances at the Demon Castle, Princess Syalis goes to great lengths to add luxuries to her castle prison.
Runtime: 24 minEpisode 5: The Princess and Female Warriors
2020-11-03The female unit, long deployed out in the field, has returned to the Demon Castle to get their first taste of Princess Syalis.
Runtime: 24 minEpisode 6: The Princess’ Unwavering Choice
2020-11-10Dawner 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.
Runtime: 24 minEpisode 7: Even More Sleepless Princess of the Castle
2020-11-17Princess Syalis wakes to find herself in a completely different castle! What happened and how will she return to the Demon Castle?
Runtime: 24 minEpisode 8: The Princess and the Frightful Demon Nightmare
2020-11-24Back at the Demon Castle, Princess Syalis interrupts an important meeting to share about her haunted dreams.
Runtime: 24 minEpisode 9: The Princess and Hostage Training Week
2020-12-01It’s time for Princess Syalis to start acting like a proper hostage, so the demon king issues a decree to help change that.
Runtime: 24 minEpisode 10: The Princess in Endopolis
2020-12-08Princes Syalis is determined to get her hands on the latest and greatest sleep product, but it’s only available in the Human Realm.
Runtime: 24 minEpisode 11: The Princess and Troubling Dreams
2020-12-15Princess Syalis feels tired no matter how much sleep she gets, and her troubling dreams aren’t helping.
Runtime: 24 minEpisode 12: Sleeping Princess of the Demon Castle
2020-12-22Despite living as a captive in the Demon Realm, the princess writes a letter to Santa. The letter’s contents shock the demon king.
Runtime: 24 minVideos
Sleepy Princess In The Demon Castle Official Trailer
