Hyperdimension Neptunia X Honkai Impact 3rd: Connecting Dimensions

Kiana Kaslana woke up after several years of being asleep; Otto left a message to her about the world is in chaos. Noire, A CPU of Lastation was suddenly dropped into Kiana's world. What will happen that both different Worlds are connected to each other? one answer is.. it could be disaster waiting for them or could it?