I'm so confused when was there 2 of them 😭😭

They aren’t actually twins but they looked like twins. She’s adopted the ML Who is seo in, and jaewon is the biological child.

Ohhhh wait does ML just dye his hair?? Was wondering if somehow MC used to know the adopted one but is now with the biological kid but just didn't know you can probably tell i don't remember much from the earlier chs