Shannu of the group Monstarr X' is posing for a live rehearsal of Mnet 'M Countdowndown' at cj ENM Center in Sangam-dong, Mapo-gu, Seoul on the afternoon of the 15th.
On the day of the M Countdowndowndown, Kwill, Hay Girls, JBJ95, TWICE, Promis Nine, ATIZ, MXM, Hot Shot, The Man Black, Wikimki, Golden Child, April, Mighty Mouse, Stray Kids, Eyes One, Gugudan, Seo In Young, Monstar X, BtoB and others appear.