Furin Hakusho.

Harumi is sexually deprived and given the cold shoulder treatment by her husband and is also being harassed by her mother-in-law because she was diagnosed as infertile by a doctor. One day, she is seduced by Kazama, her gym instructor. She can't control the hot flashes of her body and accepts the desires of a young man. But a few weeks later, she finds out that she is pregnant. But isn't she supposed to be infertile? Or is there a conspiracy between the doctor who declared her as such and her husband and mother-in-law? And when she learns the truth, something breaks inside Harumi...