This doujin possesses a heavily-textured cover, which made a clean scan difficult. I have opted to upload only a slightly touched up cover because of the damage attempted clean-up with existing tools was causing.
If anyone has a good way to take care of this problem without noticible damage or twelve hours of painful and careful hand editing, your comments would be of great appreciation. I would gladly rescan and reclean the cover, if a good method to take care of the texturing ripples, without excess damage exists.