Looking closely, I found this description.

Maybe they'll do it? I'd be so happy if they did... Oh, but the exhibits might change... No! That's unlikely. The technical problems with transporting and storing the artwork would be far fewer than for a typical art exhibition.

I'd be so happy if it happened! I wonder if they could do it near my house? Oh! Maybe... Right, I had interpreted the comments from both professors (which you can read at the above https://oshinoko-ten.com/special/) as an exhibition of paintings from the original work, and that might be correct, but the fact that the anime side is organizing it...

Will the "Oshi no Ko" exhibition/Miracle of the Stars tour? | 西尾一朗's post