You will need to install a user script manager extension to install this script.
This script is based on the original "WaniKani External Definition" script by polv which loads and displays Kanji information from Kanjipedia and Vocab information from weblio.
Version 0.10 additionally displays the kanji readings from Kanjipedia on WK's kanji, lessons and reviews pages.
Version 0.9 introduces a fix that prevents WaniKani's page from going blank when a script is accidentally being scraped from weblio.
Version 0.7 - 0.8 introduce general improvements in code and look.
Version 0.6 introduces a hotfix because the original script accidentally tried to load images from WaniKani, which could trigger an error 429 "Rate limit exceeded".