Anna was the younger sister of Boss, leader of a motorcycle gang. She met Jagi when he fled the Hokuto dojo and joined her brother's gang. Anna grew close to Jagi and supported him in his dream to become Hokuto Shinken successor, encouraging him to carve out his own destiny. She also inspired Kenshirou when she scolded him for holding back against Jagi in their sparring matches. An act that would inadvertently send Jagi into exile afterwards.