I´ve actually seen only a few episodes of gungrave,
but it seemed to be more close to Hellsing than Trigun ever was /-
Trigun is mostly comedy as I´ve it watched,
a little drawback in the seriousness /-
"
Anime reviews"
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Noir was also an intriguing one,
And might be something you´d find of intrest from what I saw of the few first episodes /-