If you check ascii2d the original pixiv was 720x1020, same resolution as the fmkorea link. It has a different md5, but it's the closest version to the pixiv one, so I'm replacing it.
And now, I'm getting "MD5 mismatch" tags that I don't know how to deal with because the images I uploaded are slightly bigger than the intended source. I already changed the source URLs in the images, but I can't replace the images themselves. Can someone change the images so they match the intended sources please?
UPDATE: I went and found the Pixiv versions and made those the parent images.