In a family of three Futa story, it could be centered on their relationships. The two adult Futas might have a romantic relationship and they both have a strong bond with their Futa child. They could be going through different phases in life, like the child starting to develop their own personality and interests which may or may not align with what the parents expect. And they have to navigate through these changes while also dealing with any external pressures from the community.
A family of three Futa story could be about a unique family dynamic. For example, it might be about how two Futa parents raise their Futa child in a world that is not always accepting. They could face challenges in school and society related to their identity.
Well, it could be a story of a family of three Futas living in a small town. The story may revolve around their daily lives, like how they go about their jobs, hobbies, and family traditions. Maybe they own a local business together and deal with different types of customers while also having their own family issues to sort out, such as disagreements on how to decorate their home.