I love Lawlu, but I dont think either of them will be able to handle carrying a baby for 9 months
Law because trauma and stress will hurt the kiddo, he will worry himself to the edge.
Luffy because he does not sit still and contorts his body ever which way, the baby cant do the same, so its bound to end up hurt somehow
Sooo with Law's power, they will have to use a surogate
There is Sanji, i see him volunteer to carry Luffy's child by switching around organs if he wasnt worried about genetic modifications and how it would effect the person he traded with or the baby. Plus his own trauma would put him in almost the same spirals as Law. Not a choice.
The next option is Zoro . He would have been the first to volunteer, if he didnt think that his sword skills would be better suited to protect whoever carries the baby. This is the Captains baby, and as such its the *crews* baby lol
(Nami outright said no, unless they pay her like all their bounties combined xd, pregnancy? No ty, gl though. She'll be a great aunt xd)
So Zoro ends up carrying the baby and is taking it surprisingly well. Law does not leave his side, for anything and they get closer then ever. Law also spars with Zoro as the man gets restless as he cant hone his swordsmanship as much.
Luffy joins them for training, watching and bringing food up so Zoro remember to eat so their babeh grows big and strong xd.
The strawhats + law taking communal parenting to the next level with their powers is hilarious to me xd