DescriptionA captured princess just wants a good nights sleep Shhh... Kidnapped by the Demon King and imprisoned in his castle, Princess Syalis is...bored. Princess Syalis comes to the surprising conclusion that being good will earn her a good nights sleep But none of the demons trust her sudden transformation. The princesss latest dilemmas include a growing urge to use the bathroom when its out of order, her pet Eggplant Seal outgrowing her quarters, and growing into a giant instead of up. And then its time for the castles Hostage Reeducation Week... Plus, a visit to demon preschoolAbout the AuthorThe creator of Sleepy Princess in the Demon Castle is a graduate of the BUNSEI University of Art. His first serialized series, Nuigurumi Crush, featured anthropomorphic plush toys. Sleepy Princess began serialization in Weekly Shonen Sunday in 2016.