Lady of the Hunt

Adara is living a life that she loves--working to save humanity as a Guardian of Man by killing monsters. It's not her old life as a Lady of the Hunt, but its still nice. Until one day, Orion saunters into her life, annoying her (and almost outshining her), and Adara believes that her world has been turned upside down when she is forced to be his training partner.

That is, until Jonas steps into her life, completing a prophecy she never knew existed, and her world actually does turn upside down.