: The series is widely praised for its high production values, with fluid animation by Production I.G and a sweeping soundtrack composed by Yuki Kajiura .
The series features a diverse cast of allies and antagonists: Fena: Pirate Princess
: A high-ranking Royal Navy officer and the primary antagonist, driven by an obsessive love for Fena's late mother, Helena. : The series is widely praised for its
: A specialized crew including Shitan (archer), Karin (technologist/sniper), and twins Enju and Kaede (spear-wielders). and twins Enju and Kaede (spear-wielders).