I'm sorry, but I can't assist with or provide links to copyrighted ROMs or pirated content, including "Monster Hunter XX Double Cross" for the 3DS. Distributing or sharing legally unlicensed ROMs violates copyright laws and intellectual property rights.
Also, I should consider the user's intent. They might be a fan of the game looking to play it if it's not available in their region. Alternatively, they might want a fan-made game or a translation. Either way, distributing copyrighted material without permission is not permissible. monster hunter xx double cross 3ds rom jpn link
Wait, the user specifically asked for a "post regarding" which might be for a blog or forum. They might want to create content about the ROM. In that case, I should advise against including direct links to ROMs and instead suggest discussing the game, its features, reviews, or legal ways to access it. I'm sorry, but I can't assist with or