Ok, so I really did check the websites I was talking about, and there are actually no watermarks, and you can download the panels.
Here's one website:
https://mintmanga.live/a_tamed_legacy
And here's another one:
https://mangalib.me/sunjongjeog-in-yusan?section=info
Also I'm a native Russian speaker, so you can tell me if any help is needed if you'll even use these websites. I gope I made your work easier even a bit ٩(๑❛ᴗ❛๑)۶
If you mean the Russian raws, I added them in the comment below the head one, but here you have them again:
Here's one website:
https://mintmanga.live/a_tamed_legacy
And here's another one:
https://mangalib.me/sunjongjeog-in-yusan?section=info
Hi new translator, I read what you wrote in the first page, and there is the russian translation which has less or barely any watermarks. You can try taking it from there. I'll check to make sure that I'm right, but I'm almost sure there aren't watermarks.
You can still translate it from korean, but apply the text to the russian ver.
If you are interested, I'll give the link to that website. Hopefully it might help you with the translation process (and I hope that that website allows downloading the pics from there, though I'm almost sure it does).