Hi, Azron--Thanks for joining us! I see you found the DJG board on our forum so if you couldn't find any fanfics or info about them on our board then I think you're out of luck here.
DJG was wildly popular here when it ran; that was the most active this forum has ever been. But that was back in 2003 and most of the people who watched it then have gradually drifted away and aren't here any more. I can't help you either--it was before I started watching K-dramas.
If you do manage to find some good content then please so share the information here so that anyone else looking for the same thing can find it. We try to gather and post as much information as possible in this forum.
I do remember a few years ago hearing that there was talk of doing a sequel to DJG, but nothing ever came of it, at least not yet. Anyway good luck in your search.