EPEX is gearing up to make their next comeback!

On March 20 KST, C9 Entertainment unveiled concept teasers of members Baekseung and Jeff to promote EPEX's upcoming 3rd mini album 'Prelude of Anxiety Chapter 1: 21st Century Boys.' In the images, both members are seen dressed in a deep navy uniform accented with chunky metal accessories for a futuristic edge.

Meanwhile, 'Prelude of Anxiety Chapter 1: 21st Century Boys' is set for release on April 11.

Check out the concept photos below!