Enemy of a friend 4

Fuhua understood that Wang Deming is really confused and he is not acting that way to tease him.

After all, if he was actually teasing him, he would know it already. But now looking at the frown on his face, he was sure that it was not an act.

He thus decided to clear his doubts and answered his question, "Well, it is true that they are siblings. In fact they would be cousins because they both are the kids of sisters. But in their entire life, there is not a single day when they had behaved like a pair of siblings or cousins would behave. They had always been a pair of mortal enemies from the time they had consciousness."

Wang Deming understood his words but he was curious about the reason. What would be the reason for a pair of cousins to behave like a pair of mortal enemies from the time of their childhood?