Summon Night X Tears Crown Black screen ? T_T

Hello i tried playing this game. It works fine but when it reached the fighting but everything is black !I can still play it. the first button is attack so i could keep hitting the button and fight but i dont know what im doing xOCan someone tell me how do i fix this ?

What flashcart/emulator do you use ?
Give us more info.

I use NO$GBA

Try using it with No$zoomer.
or download the full package from here.

Thank you it can work now.