ASTER:
There was a Japanese drama where the storyline was quite absurd—after the wife dies, her soul enters her teenage daughter because she refuses to leave her husband. She then manipulates the situation by asking her husband to love her while in their daughter's body. The concept was completely bizarre, and the script was utterly rubbish. If the drama you're suggesting follows a similar pattern, I have no interest in watching it.
and thanks for your suggestion i will check them
from what i remember he is protective of her cause in his mind she is his his wife and she is protective of him cause in her mind she is still his wife.
No need to worry though there are no scenes where they see each other sexually,but there are some jealousy scenes from both.