Line Friends - Wikipedia

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

Choco, LINE Wikia

TRUZ, TREASURE Wiki

Why is it called BT21? Is there a specific reason for the name? - Quora

BTS X BT21 Collaboration

藤沢市で残土を処分する方法をご紹介！一般の粗大ゴミの捨て方とは違う？

LINE Friends, LINE Wikia

Why is it called BT21? Is there a specific reason for the name? - Quora

WDZY, ITZY Wiki

What are the BT21 characters genders? - Quora