Hikaru Saotome grew up in an orphanage in Kyoto. After she graduates from high school she drifts from one unexciting job to another and never feels satisfied. Then, one day she accidentally observes a boxing match and something inside her wakes up. This is definitely the sport for her, she thinks. She takes the train to Tokyo and makes her way to the Morita Gym, but the owner of the gym, Masahiro Morita, won't even talk about it. “Female boxers?“ he sniffs. “Out of the question.“ However, Hikaru is determined.