Series·2020

Sleepy Princess in the Demon Castle

Name: Sleepy Princess in the Demon Castle
Genre: Animation, Comedy, Sci-Fi & Fantasy
Released: 2020-10-06
Rating: 8.3
Cast: Inori Minase, Kaito Ishikawa, Yoshitsugu Matsuoka, Hiro Shimono, Rikiya Koyama

Sleepy Princess in the Demon Castle streams in the US on Crunchyroll, as of October 5, 2026.

8.3 / 10 · TMDB

Animation Comedy Sci-Fi & Fantasy

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.

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