“Butterfly” is the third song on BTS’ fourth mini album, “The Most Beautiful Moment In Life Pt.2.” The lyrics of the song express the fear of losing someone using the metaphor of a butterfly. The members convey their longing for the person who is fragile to stay by their side and promise not to let go, as they are scared of them flying away and breaking. The song showcases BTS’s ability to delve into emotional depth and complexity in their music.