"Obsidian" by Jennifer L. Armentrout is a captivating young adult fantasy novel that follows the story of Katy, a teenager who moves to a small town and discovers her neighbor, Daemon, is not just an ordinary boy. Daemon is a member of an alien race known as Luxens, possessing supernatural abilities. As Katy gets entwined in his world, she faces various challenges, including dangers posed by other alien entities and her own evolving feelings for Daemon.

The quote "Oh. Dear. Baby. Jesus." reflects Katy's often humorous and dramatic reactions to the extraordinary events unfolding around her. It captures her blend of teenage angst and the absurdity of her situations, making her a relatable and engaging protagonist. The book combines romance, action, and humor, appealing to readers who enjoy stories filled with suspense and supernatural elements.