The inclusion of the chapters "Enemies" and "Friends" in the novel serves a purpose to showcase the complexities of relationships and the impact they have on the characters. These chapters demonstrate the dynamics between individuals, both on a personal level and within a larger context. They provide insights into the conflicts, alliances, and shifting dynamics that shape the characters' lives. By exploring the themes of enmity and friendship, the novel delves into the intricacies of human connections and how they can influence the characters' journeys and the overall narrative.