Manga Maou-jou de Oyasumi
Alternative TitlesSleepy Princess in the Demon Castle, Sweet Dreams in the Demon Castle, 마왕성에서 잘 자요, 在魔王城说晚安, 魔王城でおやすみ
Synopsis Maou-jou de Oyasumi
The princess of the human kingdom has been kidnapped by the demon king! But all she wants to do is get a good night’s sleep!?