Sleepy Princess in the Demon Castle manga volume 9 features story and art by Kagiji Kumanomata.

Princess Syalis has a new admirer, and the other demons are jealous—one in particular. How far will he go to dissuade her weaselly suitor? Then summer arrives! Syalis tries to cool off by telling ghost stories to make herself shiver but instead strikes fear into her demon captors’ hearts. Then the Demon Cleric botches a resurrection, accidentally merging himself with another, cuter demon. And finally it’s time for the Demon Castle Super Summer Festival! Naturally Syalis enters the beauty pageant. Who will be her competition? Wait—are those demons in drag...?!