Seeing Hyun Joon blanking out as he stared at the backdoor of the cafe, Lee Whan provided the details.
Later whenever Hyun Joon had difficulty following the conversation, Lee Whan explained to him. Lee Yong was just glad that his brother was not whispering it in his maknae's ears and letting him also hear it.
Lee Yong listened to it and understood what was going on. A part of him wanted to ask 'why his brother would not mind accommodating Hyun Joon but refused to listen to him'. But he held back his grievance.
Kang Chin Mae owns the Wolf cave hotel chain, and one of its subsidiaries is a chain of cafes - Walf cave cafe.
He also owns a few buildings nearby. And one of that places was used to raise and keep ducks before they were sent to his restaurant's slaughterhouse.
Dew likes ducks, but her 'Hia' never let her raise them.
As for Hia, he found out it was a word for brother in Thai, and she uses it exclusively for him.