Syalis' sister often envied her younger sister for her talent of sleep. Though Akemi found a trick that always make her fall asleep but in her castle she could never achieve the rest she was desperate for. But maybe she will in the demon castle.

A princess must be delicate, and if kidnapped, must always wait for rescue. Princess Syalis of Goodreste doesn't fit this description. She has been held hostage by Twilight, the Demon King for the past five years. Meanwhile, her hero keeps getting lost! When Dawner is joined by a new hero, the Demon King and his generals must find away to keep this new hero distracted. They send Hades, Twilight's younger brother to kidnap the blue-haired princess of Kaiyō, Aoikami.

Discontinued as of March 28th, 2022. What is Princess Syalis wasn't the only one who was captured by the Demon King? What if she had an older sister? (Y/N) Goodereste. She looks quite similar to Syalis herself. Except she ages. (Y/N)'s beauty has been noticed by everyone. Even in the Demon Castle. Who knows? Maybe a love story will be formed?

What if you're Princess Syalis's little sister? What would happen if you also got kidnapped by The Demon Lord? You are Princess Syalis's little sister, and you also sleep everytime, just like Syalis. But you can only sleep well and comfortably when the conditions are met: 1. Comfortable environment 2. Must be near Syalis !!No Manga Spoilers!! Maoujou de Oyasumi does NOT belong to me. Credits belongs to their rightful owners