Yes, 'Fourth Wing' by Rebecca Yarros is considered a spicy book, particularly within the young adult fantasy romance genre. The novel features a compelling mix of action, adventure, and romance, centering around the protagonist Violet Sorrengail, who is thrust into a brutal military academy to train as a dragon rider. The romantic tension between Violet and her rival-turned-love interest, Xaden Riorson, is a significant aspect of the story. While the overall spice level is often rated around a 2 to 3 out of 5, it includes several notable steamy scenes that are integral to character development and plot progression. The chapters identified as particularly spicy are Chapters 22, 30, and 32, where readers encounter a memorable kiss, a more graphic intimate encounter, and a tender moment where Violet confesses her feelings. Compared to other popular series like those by Sarah J. Maas, 'Fourth Wing' offers a blend of tension without overwhelming explicit content, making it accessible for a younger audience while still satisfying adult readers looking for romance. Overall, it strikes a balance between fantasy and romance, creating a captivating reading experience that resonates with a diverse audience.