Sleazy Fork is available in English.
Shows just fullsize Image with hotkeys & without pop-ups on many image-hosting sites
works for me in firefox.
Add：// @match https://chan.sankakucomplex.com/ja/post/show/*
I see, thx for explanation, now should be fixed in new version.
Thanks
Fix:chan.sankakucomplex.com
https://chan.sankakucomplex.com/ja/post/show/4760773