This game is absolutely amazing!!! I already played it a few years ago and it was one of my first VN. Since then I played a lot more, and I'll have to say: Never found (and probably never will) a game with such heartbreaking story(s) again! No other game let me feel being so close to the characters like yours.
Though... I would so much like to see a sequel to the storys with a final battle. Obviously one character seems to me to be the cause behind of (almost) all evil in DN - no matter the route (I don't want to spoiler the name here). Often after battle scenes at the end of each route I feel remebered of Marvel's super heroes: We learned to know all the characters as individuum and waiting for them to appear again in Avengers for working together :)