You will need to install a user script manager extension to install this script.
Compatibility: Firefox/Chrome, Tampermonkey <--- !!!Attention: Greasemonkey 4 was not support!
Usage: every time you open a web page, script will search a AV(/H image/Ero manga/Porn video) with page title relate from www.dmm.co.jp / danbooru.donmai.us / nyahentai.org / www.pornhub.com / www.coolinet.net
when search complete, a tiny button will blink in left corner under bottom