The group’s new single is a punk rock-style pop genre song and is co-written by Swedish songwriters Didrik Thott and Sebastian Thott, who wrote its previous song, “SNEAKERS.”

“CASE 143” is Stray Kids’ first title track that has the theme of love and compares the complex emotions of love to a “case.” The group’s producing team 3RACHA, made up of members Bang Chan, Changbin, and Han, wrote the lyrics and participated in the composition for the song.