RpNation

What if you adopt a baby? Doesn't that count?

But it doesn't share my dna and I don't know if it's even a first born. It could be a second born for all I know. Also I don't want children so there's that.

Yes but it would be the first of your children in terms of time of birth so technically it would be your first born, also blood relations was never a thing stated to be necessary.