
This is pure speculation and I doubt there is any concrete connection, but I feel like this manhwa is an somehow related to the birth rate issues in Korea rn. This manhwa likely trying to bring awareness to the pressures and internal conflicts Korean women has to face in a country with one of the lowest birth rates in the world and the societal pressures that comes with that.

Ignoring the fact that the twins are treating taehyun as a toy. I’m not to fond of how the of how the siblings are treating each other, I understand that sibling rivalry can get intense, but their relationship seems a little more toxic. Especially the sister. Stealing someone else’s significant other, especially if the person cares about them, can make them feel betrayed. Especially if the person stealing the significant other is ur sibling. Maybe it’s cause it’s too early in the story to know the twins history well enough, and why they treat each other like that. Maybe the sister also had her reasons, like the brother was treating his girlfriends badly, so she “stole” them to protect them from unnecessary heartbreak. Idk ¯_(ツ)_/¯.

agree with you about their relationship and yeah the sister seems to be the one who always starting it bcs even before she started to stole the brother's gfs she's always trying to stole everything from her brother. the brother said that in the first chapter that the sister has always been like since they were kids.

Idk if this was on purpose or not (probably wasn’t) the wax seal Raphael used on the envelope was blue, depending on the color being used the letter could mean/hint at different things. Blue signifies romance and passion, the richer the blue the stronger their feelings are. So basically Raphael is kind of sending a love letter. (≧∀≦)
I don’t know WHY the mom would blame her OWN CHILD, a CHILD, for the accident, when it’s more reasonable in that situation to blame the nanny, an ADULT, that is SUPPOSED to have the responsibility of watching the KIDS and make sure they didn’t get hurt