Songfacts®:

• "We are Bulletproof : the Eternal" is a sequel to BTS' 2013 songs "We Are Bulletproof" and "We Are Bulletproof, Part 2." The "Bulletproof" series is a play on BTS' Korean name, Bangtan Sonyeondan, which translates to Bulletproof Boy Scouts. According to the group's J-Hope, the name signifies the group's desire "to block out stereotypes, criticisms, and expectations that aim on adolescents like bullets."
• The piano-driven cut starts off with Jungkook and V reflecting on their early days before they released their debut album, 2 Cool 4 Skool, in 2013.
  
  We had nothing but dreams
  Nothing but foggy mornings when we opened our eyes
  We stayed up all night to dance and sing
  The endless music sheets
  
  The lyric, "We had nothing but dreams," deviates from the title of BTS' debut single, "No More Dream."
• The song centers on being able to face any obstacle, thanks to the support of their bandmates and their fandom, ARMY.
  
  We are we are together, bulletproof
  (Yeah we have you have you)
  
  BTS add that the group has become larger than their seven members because of the love and support of their listeners.
  
  We were only seven
  But we have you all now
  After seven winters and springs
  
  When BTS started in 2013, there were only seven of them, but now in 2020 (seven years later) they have the entire ARMY with them.