Panic X Panic
2 primary works
Book 1
"Mitsuki and Kakeru are childhood friends--and rivals! When Mitsuki is attacked by a demon, she and Kakeru discover that they have magical powers. An ancient scroll decrees that they must work together to save the world from a demon invasion. And so begins a demon-filled adventure"--From publisher description.
Book 2
Childhood friends and rivals who have recently discovered they have magical powers and a shared destiny to save the world, Mitsuki and Kakeru find themselves pursued by an ominous shadow and battling a superpowered demon.