You know that one person you just can't forget? 
Maki's first love was her high school classmate, a girl named Midori. But Midori broke up with Maki at graduation, saying they were now "too old to be fooling around dating girls." Ten years later, Maki still can't get Midori off her mind, and when the two women reconnect after a chance encounter, Maki realizes that, while her feelings haven't changed, Midori has long moved on —in fact, she's engaged. Yet the more Maki hears Midori talk about her soon-to-be-husband, the more red flags she notices. And Midori has another secret, one she hasn't yet shared with Maki. Will it be the last blow to Maki's hopes that their romance might be rekindled? Or will it be the push that sets them on a new path —one they'll travel together?