Black Lagoon (read it, modern day setting).
Queen Emeralda (space theme).
Full Ahead! Coco (extremely shonen, knockoff One Piece plotline-wise).
Space Pirate Captain Harlock (space theme).
Outlaw Star (watched it, space theme).
Aron’s Absurd Armada (can't find the manga so I'd have to resort to the anime, is a shoujo so it's target audience are girls).
Vinland Saga (read it, viking theme).
Historie (read it, ancient world theme).
Shinobi no Kuni (read it, ninja theme).
Blade of the Immortal (read it, rogue samurai theme).
Green Blood (read it, cowboy theme)
A lot of those are good reads, but not what I'm looking for. Thanks for trying though.
