Character relationships emphasize organic bonds and heterosexual romances such as Van and Agnès Claudel's subplot (where she confesses love and he gently rejects her), consistent with series canon pairings like Estelle/Joshua. The setting features ethnic diversity mirroring fictional nations, including immigration and racism threads explored through the narrative, but these serve world-building rather than driving the premise or delivering activist framing.

Developer statements note real-world societal parallels influenced writing for broader appeal, yet the core remains epic fantasy adventure without pronoun customization, gender-swapped established characters, or centralized identity politics. Prior entry Trails through Daybreak introduced minor queer elements like pronoun discussion for Quatre, but Horizon shows no escalation to focal representation or romance systems. Reception highlights story depth and combat with minimal ideological complaints, aligning with incidental rather than prominent progressive elements.