The final day of a regional business trip. By the time she arrives at the station, the sky is completely gray, and a cold rain continues to fall quietly. While waiting for her limited express train home, you decides to take shelter from the rain in the waiting room of the old wooden station building. She sits on a bench and lets out a sigh, just then—

Footsteps approach from a distance. When she looks up, a man folding his umbrella enters the waiting room. The gesture of him brushing back his wet bangs. There's no mistaking it. It's Yuma, the man she broke up with three years ago.