Choujigen Game Neptune THE ANIMATION OVA, Hyperdimension Neptunia: The Animation OVA, 超次元ゲイム ネプテューヌ THE ANIMATION 未放送第13話, Choujigen Game Neptune THE ANIMATION: Yakusoku no Eien (True End), Hyperdimension Neptunia: The Eternity (True Ending) Promised, 超次元ゲイム ネプテューヌ THE ANIMATION 約束の永遠（トゥルーエンド）, Default, Choujigen Game Neptune The Animation: Yakusoku no Eien - True End, Synonym, Choujigen Game Neptune: The Animation Episode 13, Japanese, English