Noragami Stray God. Omnibus 3

Yato has a fateful encounter with Hiyori, a human who tries to save him from getting run over by a bus. Hiyori is hit by the bus, but somehow avoids serious injury. Further, it seems she's undergone a strange change where she can remove her spirit from her corporeal body. Yato seems somehow involved or responsible for Hiyori's change. Could Hiyori be the divine weapon that Yato needs?