Because Woo-Hee knew the reason behind her parents’ divorce, she had also known about Chae Woo-Ra’s existence for a long time now. It was just that she didn’t care enough about it to pay attention to it. Just like it was for Woo-Jin, their half-sister Woo-Ra did not matter to her. 

However, when Woo-Jin appeared on TV Star and found out that A-Ra from Berry Rose was Chae Woo-Ra, Woo-Hee had also learnt the truth about it. Woo-Hee’s family didn’t feel the need to hide it from her. Instead, they concluded that it was better to tell her about it now rather than letting her find out from other people in the future.

It might have been a different story if Woo-Hee wasn’t aware of Chae Woo-Ra’s existence in the first place, but knowing who she was right now didn’t change anything. Woo-Hee was merely curious about how Woo-Ra looked like, and how different she was from them; Woo-Hee also wondered if Woo-Jin had taken after their biological father’s side of the family and became a celebrity because of that. 

But that didn’t mean they weren’t worried about Woo-Hee at all. When information about Woo-Jin’s mother’s side of the family was revealed to the public, their relationship with Chae Woo-Ra would inevitably be revealed as well. The thing that worried them the most was Woo-Hee’s reaction. They were concerned that she might end up feeling hurt during the crucial period before she took her CSAT because of this. 

The timing was ambiguous in more ways than one; Woo-Jin’s maternal grandfather thought it would be advantageous for Woo-Jin to reveal his identity as Park...