[quote=Overwatch]
gungrave has something to do with trigun? Color me interested.
[/quote]

Only sort of. They're made by the same people and the leading theory is they happen on the same planet (the peripheral details, like weird animal life and shit, are the same)

It's not a sequel or even really a spiritual-successor, like, at all, but they've got similar story arcs I guess. Gungrave is a lot more down-to-earth and mobbish for a while before it totally goes overboard, but even then it manages to stay pretty cool.