The scan is of the cover of Vol.1 of the anime comic. The TV show was to air beginning August 2004. I missed it, I'm sorry to say.
Yep, that's right, you're looking I Sun-shin, the famous Jeollanam-do admiral who repelled Japanese invasion of the Korean pennisula in the late 1500's with his famous armored "turtle ships." He's a national hero, and his statue, looking decidedly *less* hunky, stands at the center of Gwanghwamun square in Seoul.
What annoys me about this guy is that, well, he *died* for his cause, and that cause was getting rid of the Japanese. Moreover, he's really Korea's only war hero. It's as if all Americans remembered George Washington for was killing the British. *sighs* Is it so surprising, then, that Koreans are willing to die and sacrifice everything in the name of nationalism, but they can't quite figure out how to *live* for it and compromise?