Sleepy Princess in the Demon Castle, Vol. 20

A secretly filmed video of life at the Demon Castle embarrasses its occupants. Agave finally confronts her demons—or rather, the Demon King. Then, when Princess Syalis messes with a magical spinning wheel, it's Poseidon who takes the hit. To rescue the god of the sea, the princess must embark on a deep dive into the history of the spell and…her own family?! Plus, Twilight's first love revealed! Sort of.

Volume 20 of the Sleepy Princess in the Demon Castle manga series by Kagiji Kumanomata.