Is it strange that a 31-year-old brother and a 24-year-old sister go out to play alone?

It is not surprising that my p>31-year-old brother and my 24-year-old sister go out to play alone. My brother and sister are related by blood. They have a good relationship since childhood, and they often go out to play and eat together. If there is a big age difference, it is possible that my brother and sister grew up with each other and have deeper feelings. No matter how old they are, it is not surprising that they go out alone.

consanguinity is an interpersonal relationship arising from marriage or childbirth. Such as the relationship between parents and children, the relationship between brothers and sisters, and other kinship relationships derived from it.