I was cleaning out a box of old art today, and stumbled across a cheat sheet i did for a friend a number of years ago – 2016, IIRC.
This shows perfectly why I’ve stopped using Copics for larger/more expensive “legacy” pieces, as i stated a number of years ago (in 2017), in this post here: Breaking Up with Copics
Keep in mind that this cheat sheet has been hidden from all UV light for four years now — it’s literally been in a box, forgotten, until today.
So, yeah. Copics are NOT a legacy medium, folks. They’re not fine art supplies.