User blog comment:Mckrongs/Monster Hunter 4 for the Nintendo 3DS/@comment-6050823-20130926211000/@comment-26074976-20130927132430

He uses his stomach acid to burn a hole in the female and his mouth so that they're open wounds. When they touch, they start to heal and join together so he becomes parasitic and supplies sperm for as long as the female lives. Glad humans don't do it this way!