It's a drama with an astonishing start and a strangely sad ending

I loved this drama a lot.
The story was nice as well as the people who played the characters. However, the ending was sad. I did not expect that sort of ending.
It was vague. What happened to the daughter?
Does Ji Oh know his daughter is alive?
What about Gu Reum? They did not exactly show if she died?
Also, why in the whole world would those bodyguards go and catch her ( Gu Reum) like as if she is a criminal or someone who is going to run away. Why couldn't they say they were there to take her back safely. They even hit her so much. And then why didn't Ji Oh tell the bodyguards and the women who ordered to bring Gu Reum to be careful and nice. Who in the whole world wouldn't resist and try to flee if a gang of people comes like that.
I hoped for Gu Reum to be more than an ordinary person. That she would leave her pain of the present moment so that her kid can be safe, not lose memory. It's difficult of course to see her kid being electrocuted. But, she also needed to realise that her kid is not an ordinary human being. She is even much more stronger than Ji Oh. Indeed it would be better to do the high voltage charge thing later as how Ji Oh said. But she ( Ge Reum ) shouldn't have misunderstood like the way she did. She could have trusted him. The trust could have saved them from that painful ending.
I watched this drama as it was a suspense thriller drama. I was happy that it was also a fantasy drama.
I don't know why though people say the main lead Ji Oh has become a villain. Because he is doing what he can do as a father to protect his daughter. He suffered a lot. And he knows maybe that his kid is alive somewhere. So, he of course needs to make sure that his kid is safe more. He is not near her as seen in the ending. I wonder if he even knows. Maybe he believes she is alive or why would he carry on with the procedure.
Also, no one seems to be harmed by the new babies. Those new babies are fine as long as they are good. So, I don't see Ji Oh as a bad person. He was produced in a strangely wrong manner. But it doesn't mean that he is a bad person neither the new babies.
The writer left too many things for the viewers to think about.
I really really want to know what would happen to the daughter, if she would ever meet her father and mother.
I hope that they create a season 2 and give answers, make it clear. I hope that Gu Reum somehow is revived back if the writer had thought of killing her. Also that the three can reunite.
There must be a season 2 or it won't make any sense. The actor and actresses should be the same as well.

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