Another one where you fucked up the colour format due to incompetence, bloating file size. You've also screwed up the image quality of the cover pages.
When the original files are only ~70MB and your exported edit suddenly becomes five times larger, wouldn't you expect to consider that something went wrong to trigger a review of the result? No, not at Doujins.com. Where incompetent pirates put the works of others behind a bullshit paywall.
changing black level wasnt much useful as it only show more grain, meaning it look worse and more bloated. It makes sense to do it once you properly clean the raws