I'm looking for something similar to Berserk, Gantz, Claymore and ReBirth Lunatic Taker. 18+ if possible
It should be dark with some action. To be honest I don't care what the genre is as long as it's not childish.
Even romance will do but it has to real, believable. No sudden girlfriend appearance or harem bullshit.
The most important thing of all is I don't want to read anything that involves main character is who is useless pussy that is scared of everything and does things that make him uncool. MC from Freezing is a perfect example. Putting aside the fact the whole show is dog vomit, he is the worst MC i have seen to date. Even worse than Shinji Ikari.