Attack on Titan just told the whole story of how the world ended up that way... it was pretty fucking crazy, if you haven't read it yet there is no time like the present
Edit: I started reading The Legendary Moonlight sculpture it is pretty awesome, it has a sword art online vibe to it but the main character is actually a bad ass in real life... no love story yet but still great if you ask me

Still looking for something
Edit: DUDE found a great one.... Goblin Slayer!!!! there are only 8 chapters but it is awesome... Brutal, bloody, and tits

almost the same formula as berserk but without the amazing back story
Edit: Origin is a new manga that is AWESOME... art style reminds me of Ichi the killer, and the premise is kind of like a Ghost in the shell beginnings or at least what I would imagine it being
