Hanamura Koharu has just started her freshman year in a countryside high school. She soon becomes captivated by the mature beauty of her classmate, Shirotsuki Mafuyu. After introducing each other, Mafuyu suddenly recognizes them as old friends from elementary school. Delighted at their reunion, Koharu takes her cherry-blossom viewing together with Koharu’s friends. Just like the cherry blossoms, something else beautiful blooms between them. This is the story of their gentle everyday school lives.