Fans loved seeing the real-life-friends chemistry between special MCs ASTRO's Moonbin and GFriend's SinB right before the January 17 broadcast of 'M! Countdown'!

As special MCs of the day, the two idols went live on 'V Live' for a brief introduction of this week's 'M! Countdown' lineup, and that's when they were able to demonstrate just exactly how real-life friends act when they're forced(?) to work together!

As soon as the live broadcast began, Moonbin joked with SinB by leaning as far back as possible so that his face appeared "smaller" than SinB's, much to SinB's complaints! The two then went on to freely drop the honorifics when addressing each other, play-laughing at each other's actions and play-arguing the entire time. 

Fans commented, "This is exactly what real-life friends act like kekekeke", "So funny kekekeke. May the perfect chemistry beagle friendship last forever!", "She hit him for real LOLOL,, that's true friendship", "Moonbin = SinB's punching bag", "The only thing that's not real-life about these two is their otherworldly visuals", "So cute keke, it's good to see friends like this", and more!

Many fans know that ASTRO's Moonbin, GFriend's SinB, and iKON's Chanwoo worked together for a long time during their child acting days, thus resulting in their playful friendship. Did you catch Moonbin and SinB's pre-show 'V Live'?