A Kidfic is a fanfiction genre based on the idea of giving one or more characters a child to raise. This is a common device for promoting a favored shipping (often slash), by showing how well the favored pair act as parents together. Sometimes the resident badass will be given a child to soften them before pairing them with the hero. In some cases the child may be another canon character, de-aged in some manner. In other cases, it can be the instantiation of an Intercontinuity Crossover, with a child imported from another story or series.