Tuesday, June 30, 2020 
Red Velvet revealed the more teaser images for Irene and Seulgi.
In these teaser photos, Seulgi and Irene look beautiful wearing lilac-colored hats.
Red Velvet also posted two videos.
The two will make their unit debut with 'Monster' on July 6 at 6 pm KST.
5
original visuals!