Sleepy Princess in the Demon Castle manga volume 10 features story and art by Kagiji Kumanomata.

Princess Syalis refuses to play the part of the damsel in distress in a video begging Dawner, the bumbling knight in shining armor, to rescue her. Instead, she wants to be an armchair detective, a D.I.Y. hairdresser, and best friend to all things furry. But she is mistaken for Poseidon's girlfriend, an assassin, and most shockingly of all, Demon King Twilight's wife. How will Midnight (Twilight's father and the former demon king) take to his son's wife - er, hostage princess? And will the temperamental, dangerous old demon approve of the way his son is running the kingdom...?