"Ronin" is a six-issue comic book series written and illustrated by Frank Miller, first published in 1983. The series is set in a dystopian future New York City and follows the story of a 13th-century Japanese ronin who is brought back to life in the future and embarks on a quest to retrieve a powerful weapon.

The series is notable for its highly stylized and noirish artwork, which features stark contrasts, bold lines, and a heavily textured visual style. Miller's writing is also highly praised, as he blends elements of science fiction, fantasy, and samurai literature to create a unique and captivating story.

One of the key themes in "Ronin" is the idea of a warrior without a master, or a ronin, who must find a new purpose in life after losing his old one. This idea is explored through the character of the ronin, who must navigate the dangerous and uncertain world of future New York City in order to complete his mission.

Overall, "Ronin" is considered a classic of the comic book genre, and it is widely regarded as one of Frank Miller's greatest works. If you're a fan of science fiction, noir storytelling, or great comic books in general, "Ronin" is definitely worth checking out.