The Obsidian Blaze

After saving a human city from massacre at the blades of stitched-together, otherworldly monsters, Sia has been dragged back to her father's floating city. She can no longer hide from her magic, her family, or the seraph she's been bound to. However, the crown prince, Alezandral, has no interest in forcing her into their arranged marriage, so they strike a deal instead: he'll help her unravel the truth concerning her powers and she'll help him fool his country into believing their engagemen...