Your Heart Will Grow - The Absolutes, #1

Human guard Morgan Sunilian wants to be more than anyone believes he can be. He wants to be an Absolute and fight alongside the kingdom of Valiance's most elite guardians in their resplendent gold armor. Morgan will do anything to prove he's capable enough--even follow a corrupted prince--but his dreams become threatened when he meets a magical prisoner who makes him scrutinize his goals. Mermaids are supposed to be calm, serious peacekeepers.
Despite her solemn vows to the ocean goddess, Kelpana can't help letting loose around humans and their glittering parties. However, her carefree spirit places her in prison with the one guard who won't defy his given orders--even if it'll mean her death. Kelpana and Morgan have always balanced their dreams and duties. As they open their eyes to the broken systems around them, they must reevaluate if they're content with following orders or ready to find out who they're truly meant to be.---Your Heart Will Grow is a complete, standalone novel in The Absolutes series.