Gun Frontier is a manga you should check out if manly romance is far more important to you than art. Personally I liked the art, but it definitely takes some getting used to.
Gun Frontier is an adaption of the Space Pirate Harlock series, placing the badass space captain Harlock in the old American west as a badass cowboy type gunslinger. Along with him, as an equal rather than a sidekick, is his friend the small samurai Tochiro. Together they search for their people, a group of native Japanese settlers who had formed a tribe in tribal America only to have its people
scattered. Accompanying them is the beautiful and loose lady Shinunora who seems to sleep with a different guy in every issue, including the two heroes.
It's a rough tale about violence and sex. It's an ugly world the mangaka has created, and Harlock and Tochiro are not typical heroes in the slightest. The art is gritty but is very enjoyable once you're accustomed to it. The story is also rough, but as it progresses it becomes more and more involved until you're reading it for the story just as much as the pulp raw nature of it. It is fairly episodic but there is a slight overarching plot. If you're into gunfights and sex in a very different stye than most manga and you are into the romance of the west and manly tears, this is series for you.