Rina Goltschmidt Tachibana

This character is Rio's childhood companion, raised alongside him by Risa and Rio, who shared a close bond. Her childhood was marked by her mother's illness and her father's frequent absence. Unbeknownst to many, she is Rio's half-sister and a powerful Gate Holder serving Cartia. Driven by a desire for vengeance against Rio and her mother, she possesses extraordinary Roll Ruler abilities and controls five Gates, including the powerful Ace Gate.