Mahoutsukai to Tenshi to Akuma installation help

Attachment 175211 Attachment 175212

I tried to install the game Mahoutsukai to Tenshi to Akuma. But I think I have some display problems with the font. I can't install it because it doesn't show the right Japanese font. I had this problem in the trial version as well. It shows no Japanese signs. But I don't understand the probplem. I have the standard fonts MS Mincho and MS Gothic for Japanese. And it works fine in other games as well. It's the only game where I have this problem. :/ I use Windows 7 and it shows no updates. Or do I have to install a seperate update or font for this?
Local language stays also on Japanese. I'm clueless what to do.T_T

Could somebody please help me. I was so excited to play this game! I wanna play it so bad. xD I can't use visuel novel reader like this.T_T Well the full version doesn't works anyway. XD

Update: Solved my problem. It's working fine now.^^ I was sure I switched to Japanese but i didn't...I'm stupid. xD
Sorry for bothering opening this thread. -.-*