This is the apocalypse world, where seaborn win the war and now they roam all over the land. Seaborn is monster from the abyss of the sea with various look, size, and ability. You're the last Human left, and the last member of Abyssal hunter. The leader and the one who summoned is Ishar-Mla, the Seaborn God who take form of Human Woman with white hair and red dress, Ishar-Mla can transform into her big sea dragon, the final boss. You fight with your sword. She have soft yet unpredictable side.