One day at a train station, Kaoru Hanabishi encounters a confused girl in a kimono seeking an address that leads to an empty lot in his neighborhood. Taking pity on her, he brings her to his apartment where she reveals a photo of him and his childhood friend, Aoi Sakuraba. Shockingly, the girl is Aoi herself, his long-lost betrothed who traveled to Tokyo to wed him. This unexpected reunion not only stuns Kaoru but also unearths buried memories of his tumultuous past with the Hanabishi family.