Kashiwagi Akari (Yuriko Yoshitaka) is a very cheerful girl. Once, Akari lost her parents in a terrible traffic accident. Although she survived, she lost most of her eyesight. In fact, Akari has been living in deep self-blame, attributing the cause of her parents' death to herself, but on weekdays, she still tries her best to show a very optimistic side, always bringing positive energy to the people around her. By chance, Akari met a boy named Shinozaki Lei (Yokohama Meteor), who once dreamed of becoming a boxer, but because of various accidents, he bid farewell to the boxing world and now lives by doing odd jobs. Akari's happiness affected Lei. When Lei learned about Akari's tragic past and the dark side of his heart, he decided to go to the ring again and win the prize money by boxing to treat Akari's eyes.