Quickly pass through: Become cannon fodder and counterattack by having children

Introduction: Quick time travel + beautiful heroine + childbirth system + big heroine + scumbag abuse + face slap. Lin Jingwan, who had been a keyboard warrior for a time, was forced to bind the childbirth system. Only by helping the male protagonists of each small world give birth to heirs, and eliminating their blackening, can the small worlds be prevented from collapsing. Only by completing tasks and gaining points can you have the opportunity to be reborn and return to the real society. Lin Jingwan said I can! World 1: The real daughter and the underworld boss with difficult heirs. One is the poor real daughter whose fate has been exchanged, and the other is the gangster in Yucheng. What kind of sparks will the two of them create? World 2: What if modern people and a childless tribal leader travel back to primitive society? when