The Bridge Kingdom

Why these tropes fit

A warrior princess trained in isolation is dispatched as a peace bride into the rival kingdom her homeland blames for its suffering, concealing her intent to dismantle its defenses and bring its king to ruin. As political intrigue and shifting loyalties complicate her mission, her animosity toward King Aren gradually thaws into fierce passion, forcing her to confront whether she is the hero of her people's story or the villain of his, and which kingdom she is ultimately willing to save.

Evidence from the source

• Enemies to Lovers: “feelings for Aren transform from frosty hostility to fierce passion” source
• Arranged Marriage: “she's sent as a bride under the guise of peace” source
• Morally Gray: “Lara begins to question whether she's the hero or the villain” source
• Strong Heroine: “A warrior princess trained in isolation” source
• Court Intrigue: “a sweeping, sizzling fantasy romance filled with political intrigue” source
• Hidden Identity: “as she infiltrates her new home and gains a deeper understanding of the war to possess the bridge” source
• High Fantasy: “sweeping, sizzling fantasy romance” source

Metadata source: Google Books. Quotes are used only to verify the tags.