A potential plot for such a fanfic could involve Chi - Chi suspecting she's pregnant and going through the process of confirming it. Gohan, in his typical kind - hearted way, would be extremely supportive. The story could then focus on the changes in their relationship as they anticipate the arrival of the baby. It might also include flashbacks to their early relationship and how far they've come. Additionally, it could show the influence of their Saiyan heritage on the pregnancy, like whether the baby might have unique powers even before birth. And of course, there would be a lot of heartwarming and emotional moments as they get ready to welcome a new member to their family.
The plot could start with Chi - Chi realizing she is pregnant. Gohan might be initially shocked but then overjoyed. It could show them preparing for the baby, like Gohan building a nursery with his super strength. And there could be comical moments with other Dragon Ball characters like Piccolo being confused about human pregnancy traditions.
One possible plot could be that Chi - Chi discovers she's pregnant during a time of relative peace in the Dragon Ball world. Gohan, being the loving husband, would start taking on more responsibilities to ensure Chi - Chi's well - being. The fanfic could also explore how their friends and family react. For example, Goku might not fully understand the concept at first but is happy for them. As the pregnancy progresses, they could face some challenges, like a new villain threatening the safety of the unborn child, which would lead to Gohan having to protect his family in a new way.