Children in the Ocean Time of Life

Where the ripples lead the way. The encounter between a girl and a young man changes the future! A girl, Chou, has been left all alone in the world. At night, just when she is about to throw herself into the sea, she picks up a shining young man. While being pushed around by Yoru, a young man who claims to be an alien, Chou faces life, death, and light that surrounds her. (Source: Kadokawa, translated)