Jaejoong never leaves his script while working on the filming set of KBS's drama 'Spy'.

JYJ Official Facebook shared the photos on February 8th which shows Jaejoong's 'addiction' towards his script as he carried it everywhere regardless of the time and places. It was said that he carefully checked his lines in the script over and over again before each filming, which impressed many people with his dedication.

'Spy' broadcasts every Friday on KBS at 9:30PM KST.