"Butterfly" is the third single from the South Korean singer G-Dragon's first album Heartbreaker. It was released about a month after the release of his song "Breathe". Although the end of his "Breathe" music video included a teaser for his song "A Boy", the song "Butterfly" was released first. In contrast to his previous singles (which were more upbeat, "Butterfly" has a slower tempo. G-Dragon himself describes the song as "calming" while the critic for the Newsen described it as "romantic", stating that the song has an "exotic romantic rap lyrics [...and] sweet harmony vocals that appeal particularly to couples in love." The song went to the top of various charts upon its release.