Raw Source
kang / Force Koto city gov use Japanese

// ==UserScript==
// @name         Force Koto city gov use Japanese
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        https://www.city.koto.lg.jp/*
// @grant        none
// @license MIT
// @updateURL  https://openuserjs.org/meta/kang/force_koto_city_gov_site_use_ja.meta.js
// @downloadURL https://openuserjs.org/install/kang/force_koto_city_gov_site_use_ja.js
// ==/UserScript==

(function () {
  'use strict';

  const observer = new MutationObserver((mutations) => {
    mutations.forEach(({
      addedNodes
    }) => {
      addedNodes.forEach((addedNode) => {
        if (addedNode.nodeType === 1 && addedNode.matches('script') && addedNode.src === 'https://api.welltool.io/js/hptrs.js?lang=ja') {
          console.log("remove auto transaction tools");
          addedNode.remove();
          observer.disconnect();
        }
      });
    });
  });
  observer.observe(document.documentElement, {
    childList: true,
    subtree: true
  });

  // Your code here...
})();