I only read half of it because I saw many people commenting that the second half wasn't very good, pure drama, etc.
But as far as I read, it's a relatively good shoujo manga. The art is better than many mangas out there. The story and the characters are a bit cliché, but this manga stands apart from most shoujo because of the way it treats abusive relationships. This is basically the story of a girl trying to move on from a relationship with a guy who can save her from others but not from himself. It shows the "bad guy"'s side, but it doesn't excuse him. And violent behaviour is shown as problematic, and not as "sexy" as in many shoujo mangas out there.