★WATCH: Song Joong Ki fights for AOA on “Descendants of the Sun” special clip

Descendants of the Sun shares an interesting moment between Song Joong Ki and Jin Goo as they fight over their favourite girlgroups. 

In the special epilogue episode of the drama, it was revealed that prior filming the episode that mentioned SISTAR, the two actors decided to fight over the selection through a game of rock, paper and scissors.

At the time, Jin Goo was fighting to mention SISTAR in the episode, while Joong Ki was propositioning that it should be AOA instead. After a game of rock,paper and scissors, it was revealed that Jin Goo got to have a say on the episode, hence, the SISTAR cheer during the episode.

Check out the behind-the-scenes clip below.

https://www.youtube.com/watch?v=3ao6jsEsoGQ&feature=youtu.be&t=53s

Source: OSEN