What if Sparda had a brother? A brother who helped him rebel against Mundus? Who stood by him until Sparda made the fateful decision to sacrifice his wife to seal the Temen-ni-gru. Despite knowing it to be necessary, the younger brother of Sparda chooses to leave their current dimension, with his infant son, Taven. Takes place during Megadimension Neptunia VII.

The invisible war between the Templars and the Assassins continues, but just like any war, complications are bound to occur. This becomes more than apparent when the existence of Extraspecies becomes common knowledge. In Japan, one Assassin finds himself having to deal with craziness on all sides, all while his past begins to come to light.