"There's a secret behind this beach," said the old woman to a young boy she just met. But she wouldn't tell what exists behind the sands because only time can guide us to the most precious treasure we probably couldn't keep...
This love relationship is only through smartphone technology and how the characters fight to keep the relationship safe. Technology simply plays a supporting role in this relationship and our protagonists are two people who are shy in love.
"Twins" - Two children that develop in the same womb and are born at the same time, Even though we were raised in the same environment, even though... "When we were born, Hinata took even my portion of the nutrients... Those nutrients, I don't mind giving them back to you, Haru?"