Nina was born into a family that valued honor, loyalty, and courage, growing up in a rural town surrounded by forests. From an early age, she felt a connection to wolves—admiring their teamwork, instincts, and protective nature. She discovered her quirk during a forest accident as a child: when a small sibling was trapped, she instinctively shifted into a wolf-like form, healing minor injuries and scaring off predators. Her quirk was unique: she could switch between healing, tactical support, and full combat forms, giving her unmatched versatility—but it also required intense self-control and stamina management.