English: UFO Ultramaiden Valkyrie 2: December Nocturne
Synonyms: UFO Princess Valkyrie – December's Nocturne, UFO Princess Walküre 2
Japanese: 円盤皇女ワるきゅーレ 十二月の夜想曲
Aired: Oct 4, 2003 to Dec 20, 2003
Genres: Comedy, Romance, Sci-Fi
Rating: R+ – Mild Nudity
MAL: UFO Princess Valkyrie 2: Juunigatsu no Yasoukyoku
Valkyrie, Kazuto, Akina, Hydra, and friends are back for more when the Key of time suddenly appears along with many other mysterious happenings. All seemed to be linked to a person named "Valkyrie Ghost" whose only goal is stealing Kazuto for herself. As they team up against this seeming unbeatable foe they dig deeper into the mysterious past of Valkyrie’s home planet, Valhalla.