Apink Son Na-eun poses ahead of Mnet M Countdown' rehearsal at Sangam-dong CJ E & M Center in Seoul Mapo-gu on the afternoon of the 17th.
On the day of the M Countdown' rehearsal, Astro N.Flying Gracies Berry Berry Ruckers Nature Wannabe Sejin, a big girlfriend, Rabom Cheongha Apink, attended the event.
About N.Flying
N.Flying is a South Korean rap rock band formed by FNC Entertainment in 2013. The group released its first digital indie single "Basket" in Japan on October 1, 2013.
 Wikipedia