Tomo, a compassionate high school girl, treasured living close to the shore. Yet, after her parents' separation, she ceased frequenting the beach. One morning, on her route to school, she was accosted, but an admirable stranger who resembled the sea saved her. When the rescuer departed, he unintentionally left behind his keys, which bore the identical jewel as the one Tomo's childhood friend had given her. Could it be the same person? Tomo was convinced that the ocean granted blessings to individuals, and a revelation she hadn't anticipated was about to unfold!