"We Are Bulletproof Part 1" is a track that leader Rap Monster, along with then-trainees Iron�and Supreme Boi, released before BTS' debut. All three were candidates to debut in BTS, and while Iron and Supreme Boi left the label, the three are still quite close. In any case, the current BTS members changed the song up a little bit to fit the 7 members, and released it as part of their two-week long ramp up to June 13, or their 2nd anniversary.

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Check out the track below!