's manga about insomniac princess trying to sleep while awaiting rescue launched in 2016

The 42nd issue of Shogakukan 's Weekly Shonen Sunday magazine revealed on Wednesday that Kagiji Kumanomata 's Sleepy Princess in the Demon Castle ( Maōjō de Oyasumi ) manga is inspiring a television anime adaptation.

The magazine's 35th issue teased an announcement for the manga on the 42nd issue.

Viz Media is publishing the manga in English, and it describes the story:

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…

Kumanomata launched the ongoing manga in Shogakukan 's Weekly Shonen Sunday magazine in May 2016. The 12th volume shipped in Japan on Wednesday . Viz Media published the eighth volume on August 13.