Suuya Princess, known in Japanese as スヤリス姫 (Suyarisuhime), is the main protagonist of the anime series 'Maoujou de Oyasumi' (Sleepy Princess in the Demon Castle). She is a human princess who is kidnapped by the Demon King and held captive in his castle. Rather than being distressed, Suuya is primarily interested in getting a good night's sleep, leading her to amusing escapades and ingenious solutions to improve her comfort, much to the dismay of her demonic captors. Her resourcefulness and nonchalance drive the series' comedic tone.