Toshiya Sakai

Hiroko attends the memorial service of her fiancé, Itsuki Fujii, who died in a mountain-climbing incident. Although Itsuki's mother says that their old house is gone, Hiroko records the address listed under his name in his yearbook and sends him a letter. Surprisingly, she receives a reply, and discovers it came from his old classmate, a girl who also happens to also be called Itsuki Fujii.

Fired by the company she works at, and desperate for a new job, accountant Yoshimura Kaoru finds herself taking a job at Paradise Gym - a boxing gym. Through a series of events she ends up becoming the trainer of an old boxer Sawada Ryohei, trying to make something of himself after quitting his well paying job. Although she hates the sport, she finds herself attached to this rude, obnoxious man and they journey forth together to find where it is they both belong.