[BLACK DOG (Kuroinu Juu)] I went to the hot springs with my mother and daughter and found it to be a cuckold hot spring.

A mother and her daughter check into a remote hot spring for a relaxing getaway, only to land in the thick fingers of a dark-skinned old masseur whose 'special vaginal massage' comes laced with a 'bitch-ification' treatment that melts their resistance away. What starts as an invasive rubdown spirals into relentless breeding, leaving the young wife sobbing apologies to her husband as another man's seed pours deep inside her, while her curvy mother is broken in right beside her. By the end, both busty women are trading sloppy, hungry kisses and begging for 'close mother-daughter love,' turned into his personal oyakodon playthings who can't imagine wanting rescue.