Itsu made mo Musuko no Mama ja Irarenai! 4 ~Kyonyuu de Kawaii Kaa-san no Oppai ni Tsutsumarete Ippai Amaetai!~Forum

Thank you. I try to do what you said and it did work but only for like a split second. A screen opened up which I'm sure is the game screen yet it then disappear after a second. I did this couple of times and same result of the split screen, well at least I know I dont have to require a drm thing to opne this but not sure why I still cant open it sadly. But thanks for helping.