EPEX are dressed to conquer the 21st Century in their second set of comeback concept images. 

For their second set of 'Prelude of Anxiety Chapter 1. 21st Century Boys' teaser images, the EPEX members wore green, combat military uniforms, getting ready for battle. Previously, in their first concept photos, the members demonstrated a mature aura dressed in navy, ceremonial military attire. 

Meanwhile, EPEX's 3rd mini album 'Prelude of Anxiety Chapter 1. 21st Century Boys' captures the struggles of today's youths as a result of oppressive modern societal systems. The group's full comeback is slated for next month on April 11 at 6 PM KST. 

Check out EPEX's latest individual comeback images, below.