Yeah, I think we're going with the dancer and choreographer thing after all. But. Hmm! I think it'd be cute if they knew each other from before, if only to force them to interact and also have a link between Yuuri and Yuri that way.

I doubt there are too many Russians in Recollé, so maybe he can be a friend of the family? A distant relation? Or maybe he met Yuri's grandpa somewhere by chance and one day he just turned up at his place for Pirozhki time? Either way I'd love it if Yuri was stuck having to interact with this person on a semi-regular basis