Can't say for the system, since I keep them the fvck asleep as much as possible, so it's just lil me, but I think the author did it very well & respectfully.
It always depend on the individual/system, since no one is the same and everyone has different experiences, but personally, my alters an I have a very different want of interacting and being than the one portrayed in this manga.
I talked and met others with the same condition(note that mine is considered 'medically resolved' if it makes sense in English), and a bunch of people live it this way.
BUT...with the little support she had in her life and her only friend misinterpreting the situation...I find the ending resolved very fast and kinda unrealistic.
BUT!...it does also happened IRL.
It's a condition that rarely comes and goes just like that, and it takes a lot of time and work for most...but sometimes, it just does.
But again, it's just me speaking, not the whole 'system', and everyone lives with their condition very differently.
No idea if it answered your curiosity...but anyway, have a great day!
Also just want to point out that I am in no way a professional in that field.
And sorry for all the mistakes, as English is not my 1st language.
This was so beautiful. I like this author. I would also like to hear a system’s thoughts on this manga