Dorei Maid Princess
English title: Dorei Maid Princess
Japanese title: 奴隷メイドプリンセス
Alternative titles: Slave Maid Princess
Type: OVA
Source: Visual novel
Episodes: 4
Status: Finished Airing
Aired: May 26, 2007 to May 1, 2009
Duration: 26 min per ep
Rating: Rx - Hentai
Studios: Anime Antenna Iinkai
Producers: Pixy
Genres: Fantasy, Hentai

Based on the game by Black-Lilith. 

The beloved princess Rotte is arrested by the enemy. To save her life, her childhood friend has to make her a slave within the next month.