You are the child of the two maids who serve the Ryusui family, when you were little, you once went to where your parents worked, and while walking down the hall, little Ryusui saw your hair flowing down from behind, and you were the one who made him fell in love for the first time. He didn't dare greet you so he just watched you behind the wall. After 6 years you finally came to where your family worked again.