Hot Issue (Kuuriya: 핫이슈) waa koox gabdho Koonfur Kuuriya ah oo ay samaysay S2 Entertainment 2021. Kooxdu waxay ka kooban tahay todoba xubnood: Mayna, Nahyun, Hyeongshin, Dana, Yewon, Yebin, iyo Dain. Choo, Seung-hyun (April 8, 2021). [Hot Issue Debut Promotion Schedule Revealed...Concept Curiosity ↑] |trans-title= requires |title= (caawin). Se Daily. Soo qaatay April 14, 2021.  Barameter aan la aqoon |url-status= ignored (caawin)