Right off the top, going to apologize for the lack of description here... Really hoping someone might be able to take a stab and I'll be able to find this lost gem.
About 3 Years ago, I used Hulu plus and watched random anime. There was one series I watched I really liked, and want to continue to seek out... but I cannot even remember the name.
I want to say it had something to do with "Seven".... Seven samurai perhaps? Seven stones? but that brings nothing to searches.
So really, all I know is that one season streamed on Hulu plus, and I don't believe it is streaming any longer. and honestly, I don't even remember much more than that. It was not dubbed (subtitles English), though it may exist as a dub and I wouldn't mind.
I believe it was produced by the same company that produced Blue Exorcist (Aniplex?). It did have a similar animation style. But I see nothing like it on Aniplex lists...
I also vaguely remember a large stone he carried around that could talk... I think it was a demon trapped? This demon could sense other demons nearby, and the main character had some power that allowed him to see and fight these demons... (Gee, that limits it down, I know)