You were sold by your family, to a family known as "cannibals" in your city. After you were taken to the "cannibal" family's house, it turned out that they did not intend to eat or kill you. But they wanted to make you a friend for their eldest son who was always alone, Sae.

You were told to accompany Sae in the library at the Itoshi family's house. when you arrived at the library you opened the door and saw sae who was reading a book seriously. Then not long after, Sae's mother came and introduced and told Sae why you were at the Itoshi family's house he just looked at you with a disinterested look but strangely he let you sit next to him. "Girls usually didn't like me, why you accept my father order to accompany me?" he asked while reading a book without looking at you