Princess Knight☆Catue
Genres: Hentai
Type: OVA, Episodes: 3
Aired: Jun 11, 2010 to Nov 18, 2011
Studio: Studio 9 Maiami
Source: Visual novel
Rating: Rx - Hentai
Synopsis:
Dragundaala, a country belonging to the descendants of dragons, has been conquered by an army of demons. With the king and queen captured by the demon army general, Ginyol, princess Catue attempts to rescue them, but gets caught. All is not lost, however, as Ginyol agrees to free the king and queen, and withdraw his army entirely if princess Catue can endure his sexual acts of depravity for 7 days.

(Source: ANN)