Can the sands of time heal all wounds?

Twelve-year-old Ann and her divorced mother move from big city Tokyo to her mother's rural hometown. As the years pass, Ann learns to trust and depend on her new friends--Daigo and aristocratic siblings Fuji and Shika. But when Ann moves back to Tokyo to be with her father, will she be able to maintain a long-distance relationship with Daigo?

Sweet 16-year-old Ann returns to rural Shimane from Tokyo for the summer, eager to reconnect with her boyfriend Daigo. But will the allure of their close friends--wealthy brother and sister Fuji and Shika--sunder the romantic ties that have bound Ann and Daigo since they were 12?