Maybe try looking through the calligraphy tag? There doesn’t seem to be that many https://www.mangago.zone/tag/Calligraphy%20/?page=1
It's this one actually my frvt too-
https://www.mangago.zone/read-manga/canvas_ni_kuchizuke_o/
Gosh! Its from 2009! There were some good yaois before. Now its sort of same thing over. But thanks so much for this!
When i was beginner in yaoi world I used to remember every tiny bit of details from old mangas so it was pretty easy for me to find old yaois compared to new ones now i have bad memory lol , btw ur welcome ヾ(❀╹◡╹)ﾉ~
This old yaoi manga where the seme (iirc) was a traditional jap painter/ calligrapher and there was a scene where he used the uke body as canvas. Really old manga and black and white from way back 2013 or so maybe. The seme house was also traditional jap house.