My mother-in-law, my breast milk makes the bath dirty! MORINAGA no Mumi

It's been a year since I married my old husband. Her husband often emptied half of the month on a business trip abroad, and her son-in-law 'Manjiro' comforted her body with such frustrated wife 'Kurumei.' The mother-in-law and child of the husband ask each other from daytime without worrying about people. One day, when Manjiro was shaving the breasts of Kurumi, his mother's milk began to drip... Manjiro, who hates milk, dislikes her mother because of this. Kurumi continues to accumulate breast milk and desires.