Well, without more specific details about this 'fighting with the family real story', it's hard to say exactly. But generally, family fights can be caused by various things like differences in opinions, financial issues or misunderstandings.
Since we don't have the full details of this 'fighting with the family real story', it's difficult to be precise. Family fights can be complex. Sometimes it's due to generational gaps. For example, older generations may have different values from the younger ones. And then when it comes to making decisions together, like whether to move to a new house or what kind of career a family member should pursue, conflicts can easily arise. There could also be conflicts related to personal space within the family, like one family member feeling that another is invading their privacy too much, and this can lead to a fight.