Sleazy Fork is available in English.
Partially fade/remove non-english, HQ thumbnails, mark as read, subs, version grouping etc.
< NHentai Improvedについてのフィードバック
Just solved the issue, greasemonkey is grabage, using tampermonkey instead solved 100% of the problems, great script btw
I can't get the script to work on firefox, I find no settings in the profile settings option;
I use Greasemonkey from the firefox addon store (https://addons.mozilla.org/en-US/firefox/addon/greasemonkey/)
If there is a better unofficial version please tell me.