Perched on a hill overlooking a coastal harbor sits Coquelicot Manor, a boarding house run by Umi Matsuzaki's family. She manages daily chores and cooks for her roommates, while attending the local high school that is currently grappling with a minor crisis. The manor"s red roof and lavender gardens add nostalgic charm to the bustling harbor below.
With the Olympic Games approaching, a beloved old clubhouse is slated for demolition to make way for a new facility. Many students have united, working nonstop to halt the project. Umi joins the school newspaper team to spread the message, where she meets Shun Kazama and slowly falls for him. Shun is an orphan with little knowledge of his origins, and as they dig into clues about his past, they uncover shared threads that bind them more deeply than expected. Their investigation takes them through yearbooks and interviews with elders, piecing together fragments of a forgotten story. Their articles highlight the clubhouse"s history, rallying neighbors and alumni for preservation. Umi volunteers at the library, discovering photographs hinting at Shun"s family ties.