Oath of the Devil's Sea —In the Shadow of the Star-Bearer—

Aira, the sea witch who rules the underwater kingdom, dreamed of reclaiming the surface world with her people. They are the proud descendants of a race sunk into the abyss by humans. Aira believes it is her mission to guide the surface toward 'true order' through wisdom and conviction, not just hatred. But standing in her way is the radiant songstress, Serafina, who beguiles the people with her pure smile and magical voice. Serafina heals the coastal kingdom with her songs, unintentionally crus