I'm not sure if this is the right place to post it because there is basic support for nhentai.net but it's not on the list of plugins in the settings.
Either way the plugin is kind of broken because it downloads all the images but it always detects more files then there are (one file at the begging and 4/5 files at the end) and then gives me the "file not found" error for those files. My guess is that it tries to grab the cover at the top and the recommendation at the bottom. There should be a way to automatically get rid of those files or stop them from being grabbed.
It also would be good if you could set the package name as the name of the manga like it does with e-hentai.
Example links:
**External links are only visible to Support Staff****External links are only visible to Support Staff**
**External links are only visible to Support Staff****External links are only visible to Support Staff**
**External links are only visible to Support Staff****External links are only visible to Support Staff**