In the year 20XX, compensated third-party egg and sperm donation is legalized alongside a declining birth rate and the recognition of same-sex marriage. In this world, anyone can pay to have a child using another person’s eggs or sperm as compensation. The anthology series egg: I’m Your Child explores the central question: what does it truly mean to be a family? Each story features different characters—same-sex couples, single parents, traditional families, and individuals grappling with the ethical and emotional implications of this new form of reproductive payment. The narratives examine how the boundaries of parenthood, kinship, and love are reshaped when biological ties are no longer a given. The manga delves into the hopes, conflicts, and unexpected bonds that arise as people navigate this uncharted social landscape, ultimately offering a nuanced look at the evolving definition of family in a world where anyone can become a parent.