Um… I’m going to respectfully decline this one anon. Mostly because this seems like you have a very specific ficlet in mind, and if so I think it would be better for you to bring it into the world yourself. But also because I’m still trying to belatedly fill all of my ask box things you said prompts left in my ask box. And also, also, this doesn’t quite match up with my own personal headcanons for what a Shikako and Naruto family would be like.
[Also times three: Boruto canonically exists as a Naruto and Hinata child so… unless you’re saying that any first child of Naruto would be named Boruto regardless of who the mother may be, I think that might be a little confusing. It’s why I named Sakako separately from Sarada (and also so Sarada could still exist)]
But in all fairness, I could go a little bit into said headcanon for what a Shikako and Naruto family would be like since my wave of next gen fic didn’t really touch on it. I mean, there’s Kareru of course, who I still think would be the Konoha Twelve’s first kid (mostly because the idea of Team Seven accidentally acquiring a baby seems too improbable not to be true) but that wasn’t really specifically Shikako/Naruto.
I think, like Shikako/Gaara, Shikako/Naruto would primarily adopt unlike Shikako/Sasuke in which Sasuke specifically wants to revive the Uchiha clan and thus have biological kids (but that’s what the Walking Around ‘verse is for).
But my personal headcanon for Shikako/Naruto future fic predicates on the fact that Naruto realizes that becoming Hokage isn’t something that he wants anymore. Like. He wanted to become Hokage so that the village would love him. But the village already loves him, so he doesn’t need to be Hokage anymore. Then that way, Shikako and Naruto travel around the world being the badass power couple that Tsunade and Jiraiya could have been had their collective and individual tragedies/issues not driven them apart.
And then Shikako and Naruto just stumble on a lot of orphan kids with crazy powers/abilities that ostracized them from their small towns and accidentally become a traveling ninja version of Xavier’s Home For The Gifted. So I guess in a way they do what Orochimaru should have done instead of being a creepy and evil scientist. Rectifying the injustices Orochimaru and Danzo have done to orphan kids around the world…
Maybe at some point they do have biological children who absolutely love their bizarre family, but that’s not really the point. (Although now that I’m thinking of it, I kind of wonder what their names would be. I don’t think I would have them be named Boruto to prevent confusing canonically Naruto/Hinata’s son, but there’s nothing quite as simple and obvious as Sakako was for a Shikako/Sasuke daughter.)
The problem is, I’m not sure whether or not Boruto (and by extension, Himawari) would exist in this world. Like… Sarada still exists in the Walking Around ‘verse, because she’s still the genetic child of Sakura and Sasuke even if it’s through a repopulation program and not a traditional marriage+procreation. But for Boruto (and by extension, Himawari) to exist, Naruto and Hinata would have to get together at least once. Which, I mean, Naruto could very well be poly (and Shikako isn’t possessive of those she loves given my entire next gen stuff could arguably be in the same ‘verse) but I don’t know how Hinata (and by extension, the Hyuuga clan) would look upon that.
Hm… sorry anon. I just really like the idea of Shikako and Naruto traveling around and every so often they go back to Konoha with like… fifteen kids in tow all of whom have amazing and bizarre abilities.