I´m a replica—a copy who must fill in for their original whenever they don´t want to do something. But now I´ve lost my one role. As winter approaches, Sunao begins to scare me. I can´t tell what she´s thinking at all. While she´s away on a school trip, Aki and I visit Fujinomiya, Ryou´s hometown. As I enjoy my first big trip, I finally begin to unravel the mysteries of the strange beings called replicas. But am I ready to face the truth of what I am, and of Sunao´s secret?