I really like this because of how you acknowledge being able to enjoy this fictionally, but to run like actual Hell is nipping at your heels if you encounter someone like this in real life. It's an important distinction to have, but if kids ever stumble across this (or, hell, even come looking for it), this is a comment they need to read, especially since some definitely have a bit of trouble making said distinction. And absolutely, people very rarely ever change such ways in life. It happens, but it's a miracle when it does.
It's why these horrific red flags need to be taught by the parents or school. It is not the job of Mangakas' or this site's to make sure that everyone can make that distinction between reality and fantasy. Though, I do think a creators note or warning of some kind in the manga itself would be a very good thing to have (unless there already is one and I forgot about it-)
Advice for y'all readers. For those younger readers out there.. don't ever fantasize that real life axxholes like JK will change for the better later.
We can enjoy this fiction but certainly RUN AS FAST AS YOU CAN AS IF YOUR LIFE DEPENDS ON IT if you meet someone like JK or as manipulative as the new guy.
PEOPLE DON'T CHANGE. Certainly not overnight and most never will regardless of being brought up by a shitty childhood or similar excuses.