"I know I went to School." Jang Yoon-ju predicted JTBC 'knowing brother'.
Model Jang Yoon-ju posted a photo on his instagram on January 8 with an article entitled "Knowing School I've been to, I'll see you tomorrow. # Most Appearance # Third #AiBrother".
The photo shows Jang Yoon-ju posing nicely in a pants uniform; the top model's perfect uniform fit catches the eye.