try to take over the world!
// ==UserScript==
// @name webtoons.com: Load All Images
// @namespace http://tampermonkey.net/
// @version 1
// @description try to take over the world!
// @author You
// @match http://www.webtoons.com/*
// @grant none
// ==/UserScript==
for (var e of document.querySelectorAll('img._images')) {
e.setAttribute('src', e.getAttribute('data-url'));
}