So I had this idea and since I'm not sure when/if I get to write it:
Due to some serious miscommunication, Yuri's grandfather thinks that Yuri and Otabek are a couple (even though actually they are just friends). But he'll support his grandson no matter what and wants to make sure that when Yuri and Otabek do have sex, they'll do it savely so he gets basically everything needed from condoms to lube to guides on gay sex and discreetly leaves it on Yuris bed.
Bonus if he, for some reason, gets Otabek from the airport without Yuri and tells him how he should be careful with Yuri and how he's happy for Yuri etc. etc. All the while Otabek is confused, especially when certain topics come up and he is too embarrassed to correct him or he tries and Yuri's grandfather thinks he's embarrassed. Which might make for a very awkward conversation between Yuri and Otabek.
Another Bonus if Yuri grandfather conveniently leaves the two alone in the flat and visits someone else and maybe for whatever reason mentions what he thinks is going on between Yuri and Otabek. Which of course leads to rumours (maybe he meets up with Yakov or runs into Mila... go as wild as you want).
Yuri Plisetsky & Otabek Altin, misunderstanding & embarrassment
Due to some serious miscommunication, Yuri's grandfather thinks that Yuri and Otabek are a couple (even though actually they are just friends). But he'll support his grandson no matter what and wants to make sure that when Yuri and Otabek do have sex, they'll do it savely so he gets basically everything needed from condoms to lube to guides on gay sex and discreetly leaves it on Yuris bed.
Bonus if he, for some reason, gets Otabek from the airport without Yuri and tells him how he should be careful with Yuri and how he's happy for Yuri etc. etc. All the while Otabek is confused, especially when certain topics come up and he is too embarrassed to correct him or he tries and Yuri's grandfather thinks he's embarrassed. Which might make for a very awkward conversation between Yuri and Otabek.
Another Bonus if Yuri grandfather conveniently leaves the two alone in the flat and visits someone else and maybe for whatever reason mentions what he thinks is going on between Yuri and Otabek. Which of course leads to rumours (maybe he meets up with Yakov or runs into Mila... go as wild as you want).