

魔王城でおやすみ
In a world where humans and demons coexist, Demon Lord Tasogare holds the human empire's princess, Aurora Suya Rhys Kaymin, hostage. He demands humans to give him absolute rule on the world, but humanity refuses to concede without a fight and sends Yuusha Akatsuki to save the captive. Meanwhile, although unharmed, Suya Rhys spends her time locked up in the demon castle, often feeling lethargic. Even so, she has trouble sleeping due to poor hospitality. The princess then begins her amusing adven...
Maoujou de Oyasumi has been published in English as Sleepy Princess in the Demon Castle by VIZ Media under its Shonen Sunday imprint since June 12, 2018. The series has also been simulpub through VIZ Manga.
Sleepy Princess in the Demon Castle is currently publishing.
Sleepy Princess in the Demon Castle was written by Kagiji Kumanomata.
Sleepy Princess in the Demon Castle was published May 11, 2016 to ?.

Demon Lord Tasogare
Main

Kaymin, Aurora Suya Rhys
Main

Alazif
Supporting

Alraune, Neo
Supporting

Ber
Supporting

Bianco
Supporting

Castle Grunt Goblin
Supporting

Cer
Supporting

Cursed Musician
Supporting

Debi Akuma
Supporting

Demon Cleric
Supporting

Evening Star
Supporting

Fire Venom Dragon
Supporting

Former Demon King Midnight
Supporting

Former Demon King Oxenthree
Supporting

Frankenzombie
Supporting

Ghost Shroud
Supporting

Great Red Siberian
Supporting

Hades
Supporting

Harpy
Supporting

Inkyun
Supporting

Kamosh
Supporting

Kaymin, Aurora Como Rhys
Supporting

Kaymin, Aurora Nemu Rhys
Supporting
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2017
2018Ranked higher than 97% of all manga on AniTome (out of 30,039)
More popular than 97% of all manga