Hello.

Been searching for these two in Japanese Versions: Operation Darkness NTSC-J and Infinite Undiscovery NTSC-J.
But have had no luck. Only a few dead links to random rar parts. Maybe someone here has a copy of either or both.
Seems to have had releases in the past:
Operation_Darkness_JAP_XBOX360-KFC
Infinite_Undiscovery_JPN_XBOX360-Caravan