CLASS:y's lead vocalist Myung Hyung Seo is the next member to shine in a set of elegant teaser images for the group's debut mini album Y, 'Class Is Over'.

The only member of CLASS:y with debut experience, Myung Hyung Seo demonstrates her stylish gaze and relaxed poster in her individual teaser images, garnering attention for her lovely beauty. Also the oldest member of CLASS:y, Myung Seo is expected to contribute her unique vocal color to the group's upcoming debut title track, "Shut Down". 

Meanwhile, CLASS:y's 1st mini album Y 'Class Is Over' is set for release on May 5 at 6 PM KST.