User blog comment:Kogath/Monster Hunter 4 Ultimate for the Nintendo 3DS/@comment-11537809-20150316015806/@comment-7584137-20150316184115

But the hardest material for me is STILL Monoblos Hearts. I never laid eyes on one in MHFU despite all the Monoblos I killed, and I only got one in this game by carving the thing. Luckily I only needed one for the armor set, which I still use.