What is BT21? I'm pretty new to the BTS ARMY and I see BT21 being talked about a lot when BTS is brought up. Is it a BTS thing? What is the
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wi66 BTS BT21 Bangtan Boys Kpop Character BT21 Airpods 1/2 Case Silicon Cover Skin Official K-pop Authentic with Keychain V - Walmart.com
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