Bro that's llay we are talking about not some other guy he doesn't give a rat about his brother being kidnapped and him going for that he'll hold taeui either because he only wants him he wanted to catch taeui and taeui knows very well even if he tried to explain anything llay won't leave him and besides he has very less time since xinlu was about to leave where taeui couldn't even say anything he just made an unsure decision while thinking of his beloved brother either way you need to get that once llay catches taeui he won't let him go ever maybe even lock him up who knows he is a monster like everyone says
I dont expect a full fleshed dialog, just scream "HE IS THREATENING MY BROTHER" while running like hell
llay still won't let go of taeui do you think just because he said he is threatening my brother llay will let him go to save his brother taeui knows llay won't let him leave he'll still follow him either way and at that moment he only thought about his brother while in such stress I don't think anyone would be in the right mind to tell the other person what's going on
JUST TELL HIM HE HAS YOUR BROTHER HOSTAGE WHY DOES NO ONE COMMUNICATE???