That kid is totally the demon holding the apple on the first chapter. I'm kind of excited to see how else she will get pregnant, since she did claim (after having the tenth child) that she's still a virgin.
I'm betting the second child has a mother complex. I wouldn't be surprised if he ensured his dad could never touch his mom.
Totally imagine that An will do everything possible to marry her prince charming, but how will she deal with the fact that her own mother is her ultimate rival?!
The moment this is translated in my country, (and hopefully it will) I'm buying every single volume.