There shouldn't be a need to denoise digital manga raws. If they were saved as JPEGs, you might denoise with very low settings to blur out the compression artifact that'll show up near lines (although it's hard to make out with a naked eye) and then level a little.
If the you think the patterns are too sharp and you wanna use denoise to "smoothen" them out, you can try. Unfortunately, you're likely to damage fine details at the same time.
Also, since this thread's about cloning/redrawing we shouldn't really continue talking about denoise here (you can make a new thread if you need more help).
This here is to make it a little more on topic:
If you have trouble matching the patterns perfectly no matter where you source/anchor from or you have fairly poor quality raws (a lot of ink splattered over the patterns), you might wanna try redrawing before denoise. Better yet - do redraws on the aligned/cropped raw itself.
Denoise is likely to fix the inconsistencies you'd otherwise be left with. Also, selecting the "ink spatters" on the raw and using content-aware fill, or healing brush to fix them should help you use much lighter settings in topaz filters, which should come to less detail loss.