👀 oh this is feeding me a lot of ideas. let's go all the way back before they started dating, shall we? but ABSOLUTELY, he has a whole room in his house that's full of aventurine merch!!! he even got his hands on the limited edition, and in fact, i think ratio may even pick up photography to take pictures of churin (he probably has a fansite dedicated to him) but here's the thing. no one knows he's churin's fan. not even his students! he shows up to every concert and meet&greets always wearing his plaster head, but no one really bats an eye since he's not doing anything crazy (but just maybe he did creep out some people) and at some point, he is such a regular that the staff has recognized him, EVEN CHURIN RECOGNIZES HIM (its very hard to not ignore a man who is the only one to wear a statue head after all) and i think from there, aventurine is so very curious to get to know this fan of his, like man, what kind of job does he even have to keep up with all the events in aven's schedule?? in fact, how does he even have the free time????

... this turned out to be a longer answer than i expected but thank you for this delicious ask, I LOVE IT