Himekishi Angelica
English title: Princess Knight Angelica
Japanese title: 姫騎士アンジェリカ
Type: OVA
Source: Visual novel
Episodes: 2
Status: Finished Airing
Aired: Jan 25, 2008 to Jul 25, 2008
Duration: 28 min per ep
Rating: Rx - Hentai
Producers: Milky Animation Label, MS Pictures
Licensors: Kitty Media
Genres: Fantasy, Hentai

Based on the game by Silky's.

A clever and ambitious man is able to take over a kingdom by cunningly forcing his way into the hearts of the Rothschilt family women. One by one he convinces them they can't live without him and makes them into his obedient and willing sex slaves. Now the kingdom is at his mercy and his real revenge can commence. 

(Source: AniDB)