UFO Princess Valkyrie 4: Toki to Yume to Ginga no Utage
English name: UFO Ultramaiden Valkyrie 4: Banquet of Time, Dreams, and Galaxies
Genres: Comedy, Romance, Sci-Fi
Type: OVA, Episodes: 2
Aired: Jul 21, 2006 to Oct 25, 2006
Studio: TNK
Source: Manga
Rating: PG-13 - Teens 13 or older
Synopsis:
The strange and magical events of the last season have left Kazuto with two Valkyries. He now finds himself living with and looking after both a teenaged-princess Valkyrie, as well as the child-princess Valkyrie! And they still have not yet gotten married...

(Source: AniDB)