SMA-128 - My terminal son's final wish, taking me as a woman

My son Takashi has been diagnosed with a terminal illness, and he doesn't have much time left. I try to hide the truth, but he seems to sense his own decline. One day, he crosses the line. Perhaps unable to bear the thought of dying without knowing a woman, he takes me not as his mother, but as a woman. As our forbidden relationship begins, I find myself obsessively wanting to conceive his child before he passes away.