Sleepy Princess in the Demon Castle, Vol. 22  (English, Paperback, Kumanomata Kagiji)

A captured princess just wants a good night's sleep! Shhh... Kidnapped by the Demon King and imprisoned in his castle, Princess Syalis is...bored. The Monster Bird Egg Association's efforts to poach Cursed Musician prove short-lived after Syalis realises Odile's true motivations. Meanwhile, Silmoth brings some much-needed experience and dignity back to the Ten Guardians-right up until the princess enters the scene-and the residents of the Demon Castle discover the power of partying. Twilight is forced to decide whether a personal invitation to the Wild Avian Hotel is a deadly trap or a fun-filled opportunity. Plus, puppies powering up, popularity polls, and pugnacious plants!