Kaizoku to Ningyo

During a time when the world is characterized by arid landscapes and expansive ocean voyages, a rare and extraordinary creature, a sub-human mermaid, emerges. Typically, these beings possess white hair, but their coloring changes when submerged in water. Among the aristocracy, they are highly valued and traded for substantial sums. However, a rare exception is Hisui, a merman with scarlet hair, who is kept by a lord. Hisui's life takes a dramatic turn when he is stolen away by the pirate Ikuta and gains his freedom. As they embark on their journey together, they set out to navigate the complexities of their newfound relationship.