Serafim

She is a sociopath. She saw her entire family fall and then suicide. She is obviously a gray character

I'm talking about them as character too.

he didn't marry Rui Sheng, FL thinks that because of her son.

or maybe she divorces SML too and marries ML and ML dies.

Episode 8 new character gave us 2 spoilers. FL mother will die and FL will marry 3 times and one husband of hers will did. I think she will divorce ML, marry SML, SML dies and she marries ML again.

And probably will have the same ending has him.

This SML is just like SML in Splendid Match.

A women with a kid, I see your taste

She is, however she is consistent with her character. We already knew that would happen of she finds out about ML influence. She doesn't want a powerful husband, but a weak one.

3y after she dies.

Yes

ML wants love, FL wants influence and power.

At least now, both knows their reasons, so there's no misunderstandings about it.

Marriage age for that time was not 18, probably 15.

Maybe with reason, the way they are recording some scenes it seems she likes FL.

Everyone is suspicious.

no. probably kid of one of his fallen soldier.

Is first wife probably was used by dowager empress and the doctor one is probably a wife of one fallen soldier of his army

He is using his name to protect them.

ML is like Fated Hearts ML.
FL is like Destined ML.
A strong start.