Kaori lost her eyesight and family in an accident. While trying to enjoy the small things in her life, Kaori struggles to live happily. Kaori mistakes Rui for someone else and begins to talk to him. Rui was once a promising kickboxer, but something happened in his past to cause him to disassociate himself from everyone. Kaori's smile brings out a change in Rui. The two people begin to have feelings for each other, but Rui learns about Kaori's past accident and his connection. Rui decides to take part in an underground fight to pay for Kaori's eye surgery.