Moon Bin from the band Astro and Moon Sua from the band Billlie are one of the iconic sibling duos of K-pop. They often support each other and are seen laughing and having fun together. Well, now this brother-sister team has come together to put on an amazing performance for Music Bank. This is the first time Moon Bin and Moon Sua will be performing together. We are so excited! Music Bank Broadcast: Kang Daniel To Refrain From Participating Due to Injury.

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