Ayame Mizuki loves nature. So much, in fact, that she basically LIVES outside. Every day, she climbs up to the top of a tree, hoping to touch the sky. She climbs higher every day, reaches out more every day, until she falls. She wakes up in a hospital, and one of her arms are broken. The arm that broke was the one that almost touched the sky...

Two identical twins face danger: the danger of losing their parents, and being orphans. Until one day a kind women picks them up and takes care of them. Will she abandon them and let them have yet another foster home? Or will they be accepted?