Complex sentence: Meanwhile, she also tries to find out the reason why Jung and In-ho hates each other, which was revealed later that Jung looked on as In-ho damaged his hand in a fight that ruined his dreams of becoming a concert pianist.
Split into simpler sentences: Meanwhile, she also tries to find out the reason why Jung and In-ho hate each other. It is revealed later that Jung looked on as In-ho damaged his hand in a fight that ruined his dreams of becoming a concert pianist.