The idol dropped an additional teaser image after dropping one several days ago. Little about this comeback was spared save for the return date and time. Yezi also did not give the name of the artist that she collaborated with, but she has revealed the essential info today! The question mark in the previous teaser is replaced with Babylon, so it would appear that Babylon is the artist Yezi worked with.
You can take a look at the new teaser image below and check back for the full release, titled "Chase," on September 8 at midnight (KST).