Pregnancy by law ~Boy knocks up brother's wife~

Hokkyoku fire Fly's oneshota incest CG set springs into action
as a motion comic! Features voice work, SFX, and BGM!
[Pregnancy by Law]
In a certain village, there's been a long-standing custom relating to
childbirth: those unable to conceive are ostracized from the community. This
custom is still practiced today. That's why, despite looking otherwise like a
totally normal rural village, every family tries desperately to have children
so that they won't be punished. But if they still can't do it, the village
heads are more than happy to lend a hand...
[Story]
It was a normal summer vacation -- hot as ever, but I was looking forward to
relaxing on my time off from school. My brother had recently gotten married,
too, so he was back him with his new bride... my childhood crush. Though she's
10 years older than me, she used to come over to play all the time when we
were little. She always was so pretty... but it's been long enough that I'm
just happy for my brother. She's been staying with us for a few days now, but
suddenly the village elders want to talk with her...