Hirose Sakura had the worst day of her life when Monet, the person she loved, got married, but she was later given the greatest treasure. Fifteen years later she is living together with her treasured son, Toki, a high school student, and the two of them were living a normal but happy life. One day, Tooki brings along a girlfriend, Kano, who looks just like Monet, who loved cherry blossoms. From Sakura to Toki, what will happen to the love that has been handed down over two generations…?!