If I'm not mistaken, the kids are twins right? Funny how that creepy guy only look and focused to the other child as his.
I believe it is technically still possible for one of them to be his and the other not despite them being born as twins. If we apply realistic pregnancy scenarios to the story, then mc could've been pregnant with one before the marriage and then gotten pregnant again on their honeymoon. This would mean both babies have different fathers despite being carried together, it usually means one baby is born full term (the first one) and the other is premature (the second one. Granted I really dont think that creepy dude is smart enough to understand that
Woah. I really didn't see it coming that Eunjae is the reincarnation of 704's brother. Now that it's mentioned, I actually go back to the chapter of their past life and saw how similar he is with his past life. I just didn't take notice of it. It makes sense now how Hwan keeps on following him even in his reincarnated life.










Where did that grandfather come from again??! Argh. I need the intervention of Taesung's parents here! ヽ(`Д´)ノ