// ==UserScript==
// @name             GOWASU
// @include          *
// @version          1.00
// ==/UserScript==

var nodes = document.evaluate(
      '//text()',
      document, null,
      XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null
      );

for (var i = 0, elm; elm = nodes.snapshotItem(i); i++) {
   elm.data = elm.data.replace(/\u3002/g, '\u3067\u3054\u308F\u3059\u3002').replace(/\u3067\u3059\u3067\u3054\u308F\u3059\u3002/g, '\u3067\u3054\u308F\u3059\u3002');
}

/* This code is in the public domain. */