im actually just getting into ,because is such different story writing and so very different , right now im in the series of -blue exorcist which is rated teen gleipnir is rated mature i like horror,bizarre an scary so if you have recommendations for them genres then dont be shy guy and tell me ok thanks
Berserk, Claymore. There are tons of other good ones as well. @Anubis Rises I think Berserk is classified as medieval action. There are some horror-like elements, and very nasty characters and moments, but I would classify it as heroic fantasy. Keep in mind that the "hero" of heroic fantasy isn't always a heroic or good guy.
Yes, really dark. The eclipse page being the darkest one, you can check the anime version on YouTube (don't if you sensitive )