超次元游戏 海王星 ～充满涅普涅普的感谢祭～

Today is Planeptune's costume festival! However, due to the last-minute preparations, the organizer Neptune is feeling completely worn out. Just then, news arrives that the other Neptune (the bigger one) they met before on Natsuyasu Mountain has come to this dimension. While Neptune is too busy with preparations to leave, Nepgear and the others go to welcome her. But when they return to the room, they find Neptune completely burned out and pale as a ghost...!!