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Without you the World would be Gray
NaruSaku-Meet us in the future by CiocoLoco97
Quick question, is it ever acceptable for an OC to have the rinnegan? (but it is 200 or so years after the events of Naruto shippuden)
I've never seen someone pull the rinnegan off with an OC before, but that's not to say that it couldn't be done, although it would be difficult. The only canon character other than So6P to awaken what we would normally consider to be rinnegan was Uchiha Madara, with Sasuke being the only other person, with a differing version and only having it in one eye. 200 years is a long time though, so it's possible for it to happen, as, presumably, there will be a bunch of sharingan weilding maniacs Uchihas around again. You would have to justify how they got it though, as it seems to require having the eternal MS and combining chakra from the Uchiha and Senju clans.
There would also be the possibility of someone having the rinnegan implanted into them like with Nagato, though of course it would require your OC having a lot of chakra to be able to use it. With advances in science and technology though, it's hard to say what would and wouldn't be possible. With the right set up, you could potentially create an army of rinnegan users which had the rinnegan implanted into them after the eyes were created in a lab or something.
If you wanted to send an ask with a bit more detail explaining how you were thinking about pulling it off, then I would be able to say more. I'm just not sure what the Naruto world would be like in 200 years, so the ways to try and make it work really would depend on what you decided the world would be like in your time setting.
Cosplay future Naruto with his shorter hair? Of course I would!
Some days I'm Naruhina and some I'm NaruSaku
...It would make more sense seeing a red hair'd child between naruto and sakura than naruto and hinata.....
(still naruhina)