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Sirex

Sleepy Princess in the Demon Castle

The story follows Princess Syalis, a young princess who was kidnapped by the Demon King, and her quest to sleep well while imprisoned.Despite the Demon King's best attempts, the princess turns her kidnapping into a vacation; having grown tired with the stress of a royal life, she is indifferent to the situation.©KK, S/DC

IMDb 7.512 episodes2020HDU/A 13+

Animation•Comedy•Fantasy•Anime

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Included with Prime

Japanese

Episode Related Details

S1 E1 - Sleepless Princess of the Castle

October 1, 2020 • 23m•U/A 13+

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.

Included with Prime

S1 E2 - The Princess and Furious Fluff

October 1, 2020 • 23m•U/A 13+

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.

Included with Prime

S1 E3 - The Princess and Forbidden Knowledge

October 1, 2020 • 23m•U/A 13+

Princess Syalis is on the loose again meddling with forbidden magical items and causing total mayhem for the Demon Castle.

Included with Prime

S1 E4 - The Princess, Destruction, and a Short Journey

October 1, 2020 • 23m•U/A 13+

Fed up with her circumstances at the Demon Castle, Princess Syalis goes to great lengths to add luxuries to her castle prison.

Included with Prime

S1 E5 - The Princess and Female Warriors

October 1, 2020 • 23m•U/A 13+

The female unit, long deployed out in the field, has returned to the Demon Castle to get their first taste of Princess Syalis.

Included with Prime

S1 E6 - The Princess' Unwavering Choice

October 1, 2020 • 23m•U/A 13+

While she was lying in bed, the princess spilled her glass of juice on her favorite sheets. "I have to wash my comforter immediately for a good night's sleep!" she says, and she begins her quest immediately by walking around in the castle.

Included with Prime

S1 E7 - Even More Sleepless Princess of the Castle

October 1, 2020 • 23m•U/A 13+

Princess Syalis wakes to find herself in a completely different castle. What happened and how will she return to the Demon Castle?

Included with Prime

S1 E8 - The Princess and the Frightful Demon Nightmare

October 1, 2020 • 23m•U/A 13+

In order to save the captive princess, the group of heroes continue their adventure, trying a technique that involves creating a portal connecting the space with the Demon King's castle. The Demon King holds a send-off party for Fire Venom Dragon, the boss of the great old volcano, who is going to fight against the hero.

Included with Prime

S1 E9 - The Princess and Hostage Training Week

October 1, 2020 • 23m•U/A 13+

The Demon King is forced to acknowledge that he has been far too lenient with the Princess. He decides the best way to get her to behave more like a hostage would be to ignore her. Meanwhile, the Princess decides to make her own water bed to sleep on.

Included with Prime

S1 E10 - The Princess in Endopolis

October 1, 2020 • 23m•U/A 13+

The princess's escape this time has her in a serious mode never like before.Is she finally ready to escape from the Demon King's castle!? The demons are in a hurry to catch her, but the princess pushes forward without a fight. The purpose of her escape was to purchase a sleeping pillow only available in the human world. The demons finally manage to capture her.

Included with Prime

S1 E11 - The Princess and Troubling Dreams

October 1, 2020 • 23m•U/A 13+

Bussy seeks popularity and tries to learn how to be popular from the Princess. The Princess mistakes this as Bussy becoming her body double. The princess is determined to teach Bussy how to be exactly like her, however the process is torturous. Bussy ends up regretting asking for the Princess' advice and tries to avoid her after that.

Included with Prime

S1 E12 - Sleeping Princess of the Demon Castle

October 1, 2020 • 23m•U/A 13+

As Christmas day approaches, it begins snowing on the Demon King's castle. The princess gazed happily at the sky and wrote a letter to Santa Claus. The demons are wondering what she wished for. They didn't want her to escape again, so they secretly checked the contents of her letter and found a message saying, "Dear Santa, I want to go home."

Included with Prime