いもうと妊娠2 ～淫・胎・悶・絶～

An ordinary family of four.
Father, Tomoyuki, an ordinary office worker
Mother, Rinne, a full time housewife
and then Taketo and Maasa, elder brother and younger sister separated by a few years.

Siblings that usually fight, before he realizes it he has become aware that his sister's body has begun to change.

And so, one sumer day.
"Hey, ..... do you want to try it?"
Taketo says teasingly licking his sister's body.
"Ohhh, .... ahh ... onii-chan ...!"
Unexpectedly his sister has a pained reaction.
But Taketo continues his relentless passionate assault, and so little by little his younger sister's body begins to crave the experience .....

From.