They meet unconditionally. The friendship just born without any effort. They take care each other. They concern about each other. She is just like their little sister and older sister. Her safety is their responsible. They dont need to be asked to do so. It just naturally happen. ForewordThe day he decide to leave is the day he breaks all those 7 hearts. But for him that will be the best.  For her the day he dissapeared is the day she will always waiting because she know him very well. For them the day he is gone without notice is the day they know something big is going on.