Sshhh! Princess Syalis is trying to get a good night's sleep. Some shut-eye. Forty winks. Catch some Z's. Long ago in olden times when people and demons lived together in—well, disharmony, really—a demon king kidnaps a human princess and imprisons her in his castle. Bereft, the princess's subjects beat their chests in anguish…until a hero arises to spearhead Project Rescue Our Princess! While waiting for her knight in shining armor, what's an imprisoned princess to do...? Teddy-bear guards with bat wings are all very well, but her dungeon cell is bo-o-o-ring! So, she decides to wile away the long hours by sleeping. Now if only she could get comfortable…and didn't suffer from insomnia...<br>
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(Source: VIZ Media)

Episode 1 - Sleepless Princess of the Castle

Episode 2 - The Princess and Furious Fluff

Episode 3 - The Princess and Forbidden Knowledge

Episode 4 - The Princess, Destruction, and a Short Journey

Episode 5 - The Princess and Female Warriors

Episode 6 - The Princess’ Unwavering Choice

Episode 7 - Even More Sleepless Princess of the Castle

Episode 8 - The Princess and the Frightful Demon Nightmare

Episode 9 - The Princess and Hostage Training Week

Episode 10 - The Princess in Endopolis

Episode 11 - The Princess and Troubling Dreams

Episode 12 - Sleeping Princess of the Demon Castle

Doga Kobo

Lantis

Sleepy Princess in the Demon Castle