You understand that your mother is hard to raise you alone without your father beside her. You always envy the complete family which the parents and the chidren can be together. All you want is to see your mother live with happiness. You're happy when your mother told you that she has find a new partner for her life. But what happen when your future father is the father of the one you love? Will you forget your feeling about her and accept her as your sister?

Let's find out by yourself~ Anyway it's GenderBender !!

P.S. It might be happy or sad ending ^^