UFO Ultramaiden Valkyrie 4: Banquet of Time, Dreams, and Galaxies

 The UFO Ultramaiden Valkyrie 4: Banquet of Time, Dreams, and Galaxies.

  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)