Hyperdimension Neptunia The Animation: Neptune’s Summer Vacation

Original: 超次元ゲイム ネプテューヌ THE ANIMATION ～ねぷのなつやすみ～

The Goddesses and their sisters take a camping trip to "My Summer Vacation Mountain." When the sisters uncover another dimension at the shrine gates, they meet an older version of Neptune. Will they find their way back home, and, more importantly, are two Neps better than one?