Everyone has loved someone without caring about themselves. When all feelings can be thought of but not said: "I would rather hurt you and betray you than let you know that I still love you." "From now on, you are my biological sister." When all feelings turn into infatuated watch: "I just look at her." "You are the person I love with my life, how can you not be happy?" And in the end, in this game with fate, everyone will eventually... Fail... Ps: There may be multiple endings.