Seventeen's younger brother group TWS rolled out another teaser for their debut album 'Sparkling Blue.'

The boy group released the tracklist for their debut album introducing the newest songs. According to the tracklist, the album includes 5 tracks - the title track, "The First Meeting Never Goes According to Plan," "Unplugged Boy," "First Hooky," "BFF," and "Oh Mymy:7s."

Meanwhile, TWS is making their official debut on January 22 KST.