Lyrics from Teaser

HUH YUNJIN: Hey, girls, you wanna hear something crazy?
Yesterday, I went to the practice room at midnight and it was like really late. You know, just to, like, record some stuff. And then I hear this weird noise coming out from the hallway. And at first, I was like, "Hmm, that's weird 'cause there should be nobody here at this hour." So I went out slowly to see anybody was there?
LE SSERAFIM: Huh