https://blog.faceutil.com/2017/05/10/%ec%8c%8d%ec%9a%a9%ea%b6%8c-ii-%eb%8d%94%eb%b8%94-%eb%93%9c%eb%9e%98%ea%b3%a4-ii-%eb%b3%b5%ec%88%98-%ec%84%b8%ea%b3%84%ed%8c%90-double-dragon-ii-the-revenge-world-ae/