Seo In-young's 'Stage Costume Decorated with a Thought-Symbol'

Mnet M Countdown live rehearsal was held at CJ ENM Center in Sangam-dong, Mapo-gu, Seoul on the afternoon of November 1.Seo In-young attended the ceremony.

Mnet M Countdown' live rehearsal was held at cj ENM Center in Sangam-dong, Mapo-gu, Seoul on the afternoon of November 1.

Seo In-young attended the ceremony.