outsdr | An unusual premise

Two nights ago, on the verge of sleep and thinking of the deaths in my family, and idea for some sort of story (I suppose) came to me.

When a child dies before their time, the rest of the family's children would also be killed, because if one child was weak, then the rest shared their weakness.

Children were given a choice, however- they could request to be spared, which very few ever chose.

Because it turned out, being spared led to a fate worse than a quick death - former friends would no longer acknowledge the survivor; neither would the child's parents as they tried again to start a family without weakness.

Eventually, the survivor would beg for death. But it was never given.

Kind of dark, even for me. But now, what do I do with this?