ALDN-264 This bitch beast Shouta Chisato

My father-in-law was worried about why he couldn't have an important heir...
One day, his father-in-law accidentally witnessed his son and his wife having sex, and he became convinced.
That's right...my son's ability as a "Han" is low...
The father-in-law decides to inseminate his son in his place.
At first, Chisato desperately resists with her rationality...
Soon, her instincts awaken and Chisato becomes a "female" in front of her father-in-law.
However, her appearance was witnessed by her husband.
What did her furious husband do? And the ending...?