I went to check this part of the chapters because I didn't pay attention the first time. You are right, they look like Seonhoo and his children, thick eyebrows included for the little girl. .
I know right? Even those two moon buns of that little girl is same.
That was my first thought too when I saw her. Especially because of tiger eyebrows, I was sure it was them
Such cute and awesome cameo/easter egg
Omg you're so right ahhhhh
Okay I might be crazy but the girl and baby which Gyu-young saw in the day-care seems eerily similar to the babies from the manhwa "A Tiger's Den". Also the man who was holding the baby.