B.C. Morgan's Eternal is a captivating dive into a world where the lines between reality and myth blur, and where the protagonist, Unya, finds herself grappling with forces beyond her comprehension. The novel opens with an intriguing premise: a chance encounter with a mysterious motorbike rider and a dream that hints at a destiny laden with peril and prophecy. This sets the stage for a narrative that is rich in fantasy elements, yet deeply rooted in the emotional turmoil of its characters.

From the outset, Unya is portrayed as a relatable character, grappling with her own identity and the weight of expectations placed upon her. Her journey is not just one of external conflict with sorcerers, demigods, and an incubus with boundary issues, but also an internal struggle as she navigates the complexities of loss and the search for belonging. The trigger warnings at the beginning of the book—loss of a parent and suicide—are not merely superficial elements; they are woven into the fabric of Unya's character development, adding layers of depth to her motivations and fears.

One of the most compelling aspects of Eternal is its exploration of prophecy and fate. Unya's life is dictated by a prophecy that she does not fully understand, creating a sense of urgency and confusion that resonates throughout the narrative. This theme of being trapped by destiny is reminiscent of works like The Hunger Games by Suzanne Collins, where characters must navigate a world that seems to conspire against them. However, Morgan adds a unique twist by incorporating elements of Greek mythology, such as the Erinyes, which enriches the story and provides a fresh perspective on the age-old trope of the reluctant hero.

The supporting characters in Eternal are equally well-crafted, each bringing their own complexities and motivations to the table. The incubus, for instance, serves as both a source of temptation and a challenge for Unya, embodying the struggle between desire and self-preservation. His boundary issues are not just a plot device; they reflect Unya's own struggles with trust and intimacy, making their interactions charged with tension and emotional weight. The rebel group that Unya encounters adds another layer of intrigue, presenting her with choices that test her moral compass and force her to confront the darker aspects of her world.

As the plot unfolds, Morgan skillfully balances action with introspection. The pacing is well-structured, with moments of high tension interspersed with quieter scenes that allow for character reflection. This balance keeps readers engaged while also providing the necessary space for Unya's growth. The world-building is particularly noteworthy; Morgan creates a vivid and immersive setting that feels both fantastical and grounded. The descriptions of the various supernatural beings and the rules governing their existence are detailed without being overwhelming, allowing readers to fully engage with the story without getting lost in the intricacies of the lore.

Moreover, the themes of friendship, loyalty, and the quest for self-identity are prevalent throughout the narrative. Unya's relationships with other characters serve as a mirror to her own growth, highlighting the importance of connection in the face of adversity. The emotional stakes are high, and Morgan does not shy away from exploring the consequences of choices made in desperation. This is particularly evident in the way Unya navigates her grief and the impact it has on her relationships, making her journey all the more poignant.

In terms of writing style, Morgan's prose is engaging and accessible, with a rhythm that propels the story forward. The dialogue feels authentic, capturing the nuances of teenage interactions while also conveying the weight of the supernatural elements at play. There are moments of humor that provide relief from the darker themes, showcasing Morgan's ability to balance tone effectively.

Overall, Eternal is a compelling read that combines elements of fantasy, mythology, and emotional depth. B.C. Morgan has crafted a story that not only entertains but also resonates on a deeper level, inviting readers to reflect on their own journeys of self-discovery and the complexities of fate. The book stands out in the young adult fantasy genre, drawing comparisons to works like Shadow and Bone by Leigh Bardugo and The Mortal Instruments series by Cassandra Clare, while maintaining its unique voice and perspective.

In conclusion, Eternal is a testament to the power of storytelling, offering a rich tapestry of characters, themes, and emotions that linger long after the last page is turned. For readers seeking a blend of adventure, mythology, and heartfelt exploration of loss and identity, this book is a must-read. B.C. Morgan has undoubtedly established herself as a talented voice in contemporary fantasy literature, and I eagerly anticipate her future works.