https://blog.faceutil.com/2017/04/30/mame-%ea%b3%a0%ec%8a%a4%ed%8a%b8-%ec%b2%b4%ec%9d%b4%ec%84%9c-%ec%a0%84%ec%a0%95-ghost-chaser-densei-%eb%8b%a4%ec%9a%b4-%eb%8b%a4%ec%9a%b4%eb%a1%9c%eb%93%9c-down-%e2%85%a7/