Blue Magic

Bisexual Content: A main character (cisgender woman) is bisexual.

Publisher's Summary: ...The secret is out—and the world will never be the same. Astrid's best friend, Sahara, has been corrupted by the blue magic, and now leads a cult that seeks to rule the world. Astrid, on the other hand, tries to heal the world. Conflicting ambitions, star-crossed lovers, and those who fear and hate magic combine in a terrible conflagration, pitting friend against friend, magic against magic, and the power of nations against a small band of zealots, with the fate of the world at stake...