A man meets a girl at a train station with nothing but a childhood photo, and she's been looking for him her entire life. That's the whole story, told without irony or twist, just two people who were always supposed to find each other finally doing it. The show trusts this premise completely, which means you do too.

Kaoru's quiet college life in Tokyo gets upended when a lost girl in traditional dress appears at a train station. After offering directions to what turns out to be an empty lot, he invites her back to his apartment to sort things out. She produces a childhood photo that hits like a thunderbolt: it's him and Aoi, his betrothed fiancée from years ago, now standing in his living room and ready to marry him as promised. Her arrival also stirs up Kaoru's buried memories of why he walked away from the Hanabishi family. What follows is a romantic comedy with slice-of-life and dramatic elements.