Souls

Souls(also known as Soul Fragments) is a term to refer to people holding a piece of Vicsors soul. When Keishin used his spell to kill Vicsor, the spell made it so that Vicsors soul is split into random people.

When every soul is obtained, Xos will be able to use a ritual spell to revive Vicsor by literally sucking the souls of everyone and leaving them out while the Soul Fragments fuse together into Vicsors soul, which in turn will revive him.

Kurmina's job is to search for every Soul and save them before Xos gets to them.