Have you ever read a manga so realistic that you say..."Well, shit"

I read a manga once upon a time, it's been a week or so since I've read it (don't bother asking the name, I forgot it) and it's been on my mind ever since.
It hit so close to home, so realistically tragic that I cried. Yes, I actually cried. Why? Because my sister has been through similar actions, with a similar ignorant personality.
This is all I remember, so I'll explain the best that I could.
The MC, a 16 year old girl, lived in a very active and big family. But because she was a step sibling, her having a different mother than the rest of them, she felt as if an outcast. A black sheep, some call it. She'd leave her home to get money every day, she was a street whore, and had plenty of lovers out in clubs. She'd come back no later than twelve, and her mother would lock her out if one of her siblings didn't just let her back in.
She was pregnant twice, but aborted one and the other miscarriaged, and because if that, she grew depressed. Sad, and she'd go out more often than usual.
Let's just say, the ending was horrific.
Ever since I've read that manga, it left a scar, a bruise to the wound I've tried keeping closed for the longest. I cry still thinkin about it, still thinking there's many people out there who lives like my sister. And some, more than others, don't get the alternate ending of living a full life.

So, tell me, have you ever read a manga so realistically scary that you'd think about every day life and that one manga for days on end? Tell me about it.