So far NU'EST has prepared for their comeback with various concept photos and gave a preview of their album through two pre-listening teasers.

On April 15 at midnight KST, the boys unleashed their charms to captivate their fans through the music video teaser for "Inside Out." Each member exudes their own charms in different settings.

NU'EST will be back with 'Romanticize' on April 19 at 6 PM KST and will soon release part 2 of the pre-listening teaser, so don't miss out!