ぴちぴちピッチ　ａｑｕａ

Lukia Nanami turns seventeen as her family moves to a seaside town. During her first walk on the beach, she saves a handsome surfer from drowning. The next day, she finds that he is a classmate at her new school. He does not recognize her and insists that a mermaid rescued him. Her new life begins with a secret tied to the sea and a boy who remembers the rescue differently.