@AbuHajaar I can't think of any scip that would be very close.
SCP-085 is a cute take on "conscious drawing".
And then there is the classic SCP-1733 which has a somewhat similar premise of "people realising their reality is getting fucked with". Let's hope this manga stays away from that kind of development.
One thing that this reveals is that Pageratta supposedly draws the families of all of these characters and writes everything they do even when they're not seen.