I feel like his brother intentionally let go of Jaeyi's hand the day he got kidnapped

oh my

This..haha i have this feeling that this is what happen…like the brother’s facial expression say it all that he have this jealousy or inferiority complex towards jaeyi…..(or im just analyzing it too much)

Ikr, we probably got flashback of it in future chapters in his brother's perspective. And it's fine to analyze, some people just aren't ready to accept that there's more to it than meet the eyes