Maoujou De Oyasumi / 魔王城でおやすみ / 在魔王城說晚安
过去，在人与魔相互来往、共存的时代。魔王抓走了人类的公主，囚禁在自己的城堡中——。被囚禁的栖夜莉丝公主，在牢笼之中低语。「…除了睡觉…无事可做」
她偷偷逃出牢狱，为追求更优质的安眠而在魔王城中…探索!?自由任性的人质公主，随心所欲地将魔物们一起拉下水!!新感觉睡眠奇幻喜剧！
Syalis is a princess. A really cute one. When she gets kidnapped by the Demon King as a hostage, she’s stuck in a castle full of demons, waiting to be rescued by her knight in shining armor. So what does she do? What any of us would. Take a nap—on a pillow she fashioned from her Teddy Demon guards. Duh.