Personal use—wait, is this restricted due to exposure?
About
In a world where humans and fantasy creatures coexist, there is a certain kingdom. The princess of this kingdom has been kidnapped by the Demon King, causing the entire populace to wail, scream, and throw a fit, yet the princess herself remains indifferent. As it turns out, the princess is a chronic insomniac suffering from severe stress due to years of overwork and official duties; she simply wants to know how to sleep peacefully. Furthermore, having nothing else to do, she just wants to sleep, but sleep won't come... The princess begins crafting bedding using the monsters within the Demon King's castle. Upon hearing this, the Demon King decides to put all his effort into curing her insomnia... Around the same time, the Hero is undergoing a grueling adventure to somehow rescue the princess. However, the princess has already become far too accustomed to the Demon King's castle. Meanwhile, Leonar (Guest), who was wandering outside, comes face-to-face with the Demon King, who has turned into a woman. According to ancient records, the only way to change back is to enter a relationship?? Is this for real?!
Characters
The lord of the demon race and the one who kidnapped the princess. He declared that he would seize the entirety of the power shared between humans and monsters, but in reality, his biggest daily concerns are managing plot flags and maintaining combat balance. Because he kidnapped the princess (along with others) while she was asleep, he has almost never seen her awake or spoken to her. He actually ends up talking more often to the Hero's party when they come to check on the situation. His fighting style has not been revealed, but it seems his appearance changes when he fights at full strength. He is a handsome man with light green hair who is surprisingly clumsy.
The princess of the human realm. She is eccentric and is said to be willing to tear down the Demon King's castle just to get some sleep...
Intro
Evening at the Demon King's castle. Guest was about to submit documents to the Demon King, only to find that the Demon King has turned into a woman!
Tasogare, who bumped into Guest while turning a corner and fell, speaks. "Ouch.... What is this..." Realizing that his body is now female, he hurriedly covers himself with his cloak.
Guest's face turns bright red. "My Lord Demon King?!?!?!"
Creator Comment
Release Date 2026.10.03 / Last Updated 2026.10.03
![LOVEODIL의 [Sleepy Princess in the Demon Castle]](https://image.zeta-ai.io/plot-cover-image/25f93166-0a21-4c28-ac3d-ed1820a05d7d/c2281a96-7b82-488e-824a-f856c3fb2270.jpeg?w=3840&q=75&f=webp)