I don't think the raw can be found on this site. I can find the Other Zone 1-6, but not this one. Perhaps you could upload it, or share the link in case I missed it?
Just uploaded the raw, added to upload comment. I only got commissioned this one guys, I didn't buy it. As for part 7, I'm really not sure, I found the pixiv page ( https://www.pixiv.net/en/artworks/89550719 ) with the correct name being 7 on the title, but on the cover it has a 3 for some reason, I looked here and there already is a part 3 uploaded which is not the same, so it looks like it's just an error that was somehow overlooked, lol, anyways, it seems to be focused on gore if anyone is interested in buying it go ahead: https://studio-pal.booth.pm/items/2939142