Kouta Natsumi had devoted himself to surfing, and after quitting he finds his days have become enjoyable but unexciting. Then, one day, he receives a gift from Michiru Oguri, the school's honour student. Kouta becomes more aware of Michiru, but he can't figure out Michiru's feelings. With each summer, they close the distance between them, and before they know it, they find the other becoming special to them