The real-life bromance between Song Joong Ki and Lee Kwang Soo is just the gift that keeps on giving. First Song Joong Ki dropped by the set of Running Man to say hello to his old friends after returning from the military. Then Song Joong Ki, Lee Kwang Soo, and Jo In Sung went on a friends' vacation. It should come as no surprise, then, that when Song Joong Ki asked Kwang Soo to make a cameo in the upcoming series Descendants of the Sun, his buddy didn't hesitate to comply!

The crew members had the following to say about Kwang Soo's appearance: "Lee Kwang Soo immediately agreed on the cameo. The filming is already done, and even though [Lee Kwang Soo] only appeared for a brief time, he demonstrated a strong presence. Since they're so close, they flaunted a chemistry akin to that of rice cakes, which filled the set with lots of laughs." 

From the stills alone, I think we can agree on two things: 1. Kwang Soo's cameo is going to be hilarious, and 2. Song Joong Ki is looking amazing! 

I can't wait to see these two reunited on the screen, even if it's just a short cameo. Unfortunately, we'll have to wait until the fall to see Kwang Soo's appearance, as Descendants of the Sun will complete filming before airing any of the episodes. The series stars Song Joong Ki as a member of the UN peacekeeping troops and Song Hye Gyo as a doctor for Doctors Without Borders.

While we wait, you can watch Song Joong Ki's recent appearance on Running Man below:

Source: 12