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Sleepy Princess in the Demon Castle

68 chapters | Ongoing | Rank 4078
Sshhh! Princess Syalis is trying to get a good night's sleep. Some shut-eye. Forty winks. Catch some Z's. Long ago in olden times when people and demons lived together in—well, disharmony, really—a demon king kidnaps a human princess and imprisons her in his castle. Bereft, the princess's subjects beat their chests in anguish…until a hero arises to spearhead Project Rescue Our Princess! While waiting for her knight in shining armor, what's an imprisoned princess to do...? Teddy-bear guards with bat wings are all very well, but her dungeon cell is bo-o-o-ring! So, she decides to wile away the long hours by sleeping. Now if only she could get comfortable…and didn't suffer from insomnia...

Artworks


Other Facts

English PublisherViz
Original PublisherShogakukan
PublishedMay 11, 2016 to ?
SerializationShounen Sunday
Last UpdatedJuly 7, 2018
LanguagesEnglish, Japanese
Other namesMaoujou de Oyasumi, Sweet Dreams in the Demon Castle, Sleeping in Devil's Castle, 在魔王城说晚安, 魔王城でおやすみ, Maou-jou de Oyasumi

Chapters

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Vol.TBD Chapter 66: Demon King Castle Prison BreakJuly 7, 2018
Vol.TBD Chapter 65: Do You Really Believe I Would Correct My Behavior After Seeing Somebody Else's?June 11, 2018
Vol.TBD Chapter 64: The Black Full-Time PrincessJune 5, 2018
Vol.TBD Chapter 63: Don't Avert Your EyesMay 22, 2018
Vol.TBD Chapter 62: Together With Suyaris Onee-ChanMay 21, 2018
Vol.TBD Chapter 61: Sudden Change! Big Eggplant Earless SealMay 6, 2018
Vol.TBD Chapter 60: It's Against The Rules To Call Them An Adult ThoughApril 23, 2018
Vol.TBD Chapter 59: Super-Sized For Demon King CastleApril 13, 2018
Vol.TBD Chapter 58: The Princess's Sensitive MouthApril 1, 2018
Vol.TBD Chapter 57: Nooobody's At Fault!March 22, 2018
Vol.TBD Chapter 56: The Flower Garden Lying Beyond PerseveranceMarch 3, 2018
Vol.TBD Chapter 55: The Princess's Wonderful Pillow Store ♥February 17, 2018
Vol.TBD Chapter 54: It's for the Sake of a Girl's FriendshipJanuary 31, 2018
Vol.TBD Chapter 53: Not Remembering A-Something During A Deep SleepJanuary 25, 2018
Vol.TBD Chapter 52.5: Extra arc: Good night at Komi-san’s HouseJanuary 19, 2018
Vol.TBD Chapter 52: I Think That's a Sneaky Capture Method!January 14, 2018
Vol.TBD Chapter 51: Pollinated PrincessJanuary 6, 2018
Vol.TBD Chapter 50: The Princess Dances Even If There Isn't A MeetingDecember 16, 2017
Vol.TBD Chapter 49: I Want to Hit the Helpful Goods JackpotNovember 25, 2017
Vol.TBD Chapter 48: Badump! A Sorcery Tournament Filled with Demons!November 7, 2017
Vol.TBD Chapter 47: Taking Back the Princess (the Monster of Demon King Castle)October 29, 2017
Vol.TBD Chapter 46: Looks Like We Have a Master of All TradesOctober 20, 2017
Vol.TBD Chapter 45: The Girl Visiting Many Demon King CastlesOctober 12, 2017
Vol.TBD Chapter 44: Create and SingOctober 6, 2017
Vol.TBD Chapter 43: Attack!! Forehead Devil Subspecies!October 1, 2017
Vol.TBD Chapter 42: Which Child Sleeps the Most?September 25, 2017
Vol.TBD Chapter 41: Spine-chan Doesn't SleepSeptember 19, 2017
Vol.TBD Chapter 40: Chocolate is the Colour of Blood, the Colour of LoveSeptember 17, 2017
Vol.TBD Chapter 39: Keeping Secrets Isn't Good!September 4, 2017
Vol.TBD Chapter 38: Demon King-sama's Sleep or DieAugust 24, 2017
Vol.TBD Chapter 37: A Perfectly Happy PrisonerAugust 24, 2017
Vol.TBD Chapter 36: God's Move in DreamAugust 24, 2017
Vol.TBD Chapter 35: Sweet Dreams in the Outskirts of Demon King CastleAugust 24, 2017
Vol.TBD Chapter 34: Springy ♡ PrincessAugust 24, 2017
Vol.TBD Chapter 33: Stop Getting Serious in a Party Game!June 12, 2017
Vol.TBD Chapter 32: Because the Princess is a Naughty GirlJune 12, 2017
Vol.TBD Chapter 31: Although I got merged with a cat, isn't that okay...?June 12, 2017
Vol.TBD Chapter 30: I Can Upgrade the Window!June 12, 2017
Vol.TBD Chapter 29: Princess' Panties are Good PantiesJune 12, 2017
Vol.TBD Chapter 28: Totally Fluffy Futon TaxiJune 12, 2017
Vol.TBD Chapter 27: The Sloth Making MachineJune 12, 2017
Vol.TBD Chapter 26.5: ExtraFebruary 19, 2018
Vol.TBD Chapter 26: Demon King Castle (Sleep) Paralysis PlayJune 12, 2017
Vol.TBD Chapter 25: On a Cradle Unto the GraveJune 12, 2017
Vol.TBD Chapter 24: My Laundry PathJune 12, 2017
Vol.TBD Chapter 23: I'm Going to Visit You TonightJune 12, 2017
Vol.TBD Chapter 22: Guardian of the Quiet SleepJune 12, 2017
Vol.TBD Chapter 21: Why Can't Honey Be Produced From Nothing?June 12, 2017
Vol.TBD Chapter 20: A Flower's Life is ShortJune 12, 2017
Vol.TBD Chapter 19: Badump! The Training Tournament Filled With DemonsJune 12, 2017
Vol.TBD Chapter 18: Friend (Futon)June 12, 2017
Vol.TBD Chapter 17: She Looks Like the Princess and has the Same Brains as Her TooJune 12, 2017
Vol.TBD Chapter 16: Princess Finisher-samaJune 12, 2017
Vol.TBD Chapter 15: Innocent VillainJune 12, 2017
Vol.TBD Chapter 14: The Steam Killing DemonJune 12, 2017
Vol.1 13th Night: Sacred Treasure Crossing: Wild WorldJune 12, 2017
Vol.1 12th Night: The Sea of Pillows and the Tower of BabelJune 12, 2017
Vol.1 11th Night: Touch Her and She's YoursJune 12, 2017
Vol.1 10th Night: Good Night, BabyJune 12, 2017
Vol.1 9th Night: But You Have to Pay the Price, Right?June 12, 2017
Vol.1 8th Night: The Princess's Three-Star ArmorJune 12, 2017
Vol.1 7th Night: The Poisonous Mushroom of DreamsAugust 30, 2016
Vol.1 6th Night: Go Bark at the MoonAugust 30, 2016
Vol.1 5th Night: Because the Tower is ThereAugust 30, 2016
Vol.1 4th Night: Longing to Sleep on the Shield of the WindAugust 30, 2016
Vol.1 3rd Night: Sweet Sleep Like the DeadAugust 30, 2016
Vol.1 2nd Night: Bedsheets Like the Shining SeaAugust 30, 2016
Vol.1 1st Night: Castle of the Sleepy PrincessAugust 30, 2016