어푸 (Ah puh)

Credits

• Futuristic Swaver
  assistant
• IU
  background vocals, vocal
• Peejay
  arranger, bass, drums (drum set), effects, keyboard
• Shyun
  guitar
• 고현정
  mix
• 김준상
  assistant
• 손명갑
  recording
• 정기운
  assistant