Yuri, who lost her husband at a young age, originally wanted to leave her husband's home, but had to stay temporarily because she had to take care of her elderly stepfather. One day, while caring for her stepfather, she was surprised to see him sucking on her large breasts and feet like a baby, but she felt sorry for her stepfather, whose personality had changed with age, and began to take care of him wholeheartedly... Her stepfather, who sucked on anything that touched his mouth like a baby, made Yuri increasingly addicted to pleasure. One day, her stepbrother Ryo suddenly appeared and discovered that she was having him lick her feet. She tried her best to hide her feet, but she couldn't hide her defenseless H-cup breasts. Ryo took advantage of this weakness and even brought in her younger brother Harusuke, and began to train her. Every day, she was fed by nipples, vaginal fluids, and foot milk, and her body was covered in milk from her stepbrother and stepbrother. She was gradually surrounded by her husband's family and became a slave to pleasure... "Miss Yuri, from now on, I will give you lots of fresh milk to drink. Just like you did for Father."