>>281924775
Complicated. In Japan the birth mother is legally the mother no matter what so you'd have to adopt the baby instead even if the fertilized egg was from your wife. And I'm sure there are other roadblocks too. It would be easier for a japanese couple to go outside of japan to adopt or seek surrogacy. But I mean in a manga you can just envision a setting where surrogacy in japan is common or whatever, it's all just ficitional anyway.