Animation20201 seasonTV-14★ 8.4
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.
Where to watch
Provider data via JustWatch.
Episodes
1Sleepless Princess of the Castle
Oct 6, 202024 min
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.
2The Princess and Furious Fluff
Oct 13, 202024 min
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.
3The Princess and Forbidden Knowledge
Oct 20, 202024 min
Princess Syalis is on the loose again meddling with forbidden magical items and causing total mayhem for the Demon Castle.
4The Princess, Destruction, and a Short Journey
Oct 27, 202024 min
Fed up with her circumstances at the Demon Castle, Princess Syalis goes to great lengths to add luxuries to her castle prison.
5The Princess and Female Warriors
Nov 3, 202024 min
The female unit, long deployed out in the field, has returned to the Demon Castle to get their first taste of Princess Syalis.
6The Princess’ Unwavering Choice
Nov 10, 202024 min
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.
7Even More Sleepless Princess of the Castle
Nov 17, 202024 min
Princess Syalis wakes to find herself in a completely different castle! What happened and how will she return to the Demon Castle?
8The Princess and the Frightful Demon Nightmare
Nov 24, 202024 min
Back at the Demon Castle, Princess Syalis interrupts an important meeting to share about her haunted dreams.
9The Princess and Hostage Training Week
Dec 1, 202024 min
It’s time for Princess Syalis to start acting like a proper hostage, so the demon king issues a decree to help change that.
10The Princess in Endopolis
Dec 8, 202024 min
Princes Syalis is determined to get her hands on the latest and greatest sleep product, but it’s only available in the Human Realm.
11The Princess and Troubling Dreams
Dec 15, 202024 min
Princess Syalis feels tired no matter how much sleep she gets, and her troubling dreams aren’t helping.
12Sleeping Princess of the Demon Castle
Dec 22, 202024 min
Despite living as a captive in the Demon Realm, the princess writes a letter to Santa. The letter’s contents shock the demon king.
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)
Chikahiro Kobayashi
Red Siberian (voice)
Sayaka Ohara
Harpy (voice)
Ayane Sakura
Aladdif (voice)
Takeo Otsuka
Poseidon (voice)
