YUTA from NCT makes his solo debut with the first mini-album! The album includes the lead track "Off The Mask," "Butterfly," and more. The Internal version comes in an LP-sized cardboard sleeve packaging. It includes a folded lyrics poster, five photo cards (LP size), mini-photo card(s), tattoo sticker(s), two trading cards (A) randomly selected from five kinds, and two application cards (valid only in Japan).