I give up admin2, I did try to all combinations of blur and sharpening tools in Gimp but they are not powerful enough it seems. Maybe Paint Shop Pro is more suited for work like this but I don't have any experience with it. Getting rid of paper texture on light zones was easy but Yomi's sleeve was a nasty, I had to use so much blur that I couldn't preserve some folder lines on Yomi's seifuku nor thin lines in her hair.

edit: well I uploaded results of my meddling with this scan (see child post), I am not happy with it, but it is best I can do. Anybody else want to try to fix it? Would be fun to see what others can do with it.

What I did: Made 2 layers, then added slight sharpening to bottom layer and used heavy selective Gaussian blur on top layer after that made top layer about 65% transparent, merged layers, and did selective Gaussian blur once more but with only 1 pixel blur range.

I'll play around with some of the filters on CS2 and see what I get.

Imbir said:
Maybe Paint Shop Pro is more suited for work like this but I don't have any experience with it.

I doubt it.　I tried every filters on both CS & Gimp, and I found Gimp is superior than CS on clean up images. so I don't think Paint shop pro is better than Gimp.
but anyway, they are worse than graycstoration :P

(and in my personal experience, Neatimage is the best filter to reduce noises on textured paper.)

G'MIC looks nice, going to play with it.

P.S. omg anisotropic smoothing takes a lot processor power