The main character "Leon" spent his childhood in an orphanage in a countryside village with a girl "Sara" and a boy "Jake" who were also orphans, but one day they decided to go their separate ways. A few years later, Rion, now an adult, meets Sarah again by chance, and although he is puzzled by her growth into an adult woman, he decides to live with her because they are childhood friends. However, what he did not know at the time was that there was another face hidden in her.