A Cuckolding Wife's Descent: Story of Yukari Masuda

Masa's dreams of starting a family with his wife Yukari are shattered when he is diagnosed with a condition that makes him unable to produce fertile sperm. In his desperation to bless his wife with a child, he calls upon his rowdy punk brother Akihiro to impregnate her. Yukari's not thrilled about having to sleep with such a crude and inconsiderate young man, but if she needs to put out for the good of the household... maybe she should make it fun?

(Source: Irodori Comics)

Note: Released at Comiket 97.