CLASSy
클라씨
About
CLASSy, formerly known as CLASS:y, is a 7-member girl group formed through the MBC survival show, My Teenage Girl. The group is managed by K-TIGERS Entertainment for Korean promotions and Universal Music Japan for Japan promotions. The members are Hyungseo, Chaewon, Hyeju, Riwon, Jimin, Boeun, and Seonyou. They debuted on May 5, 2022, with their first mini album, Y: CLASS IS OVER.
They made their Japanese debut on June 22, 2022 with the single, Shut Down -JP Ver.-. On November 14, 2025, it was announced that they had left M25 and joined K-TIGERS Entertainment. On June 10, 2026, CLASS:y announced their rebrand to the name CLASSy on their YouTube channel with the video, New Chapter, New CLASSy.
Debut Date: 2022-05-05CLIKE:yK-Tigers E&CActive
Members
Hyungseo
2001-06-25
Lead Vocalist, Visual
Chaewon
2003-06-04
Main Vocalist
Hyeju
2003-12-09
Leader, Main Dancer, Lead Rapper, Sub-Vocalist
Riwon
2007-01-11
Lead Dancer, Lead Vocalist
Jimin
2007-11-25
Main Vocalist, Dancer, Visual, Center
Boeun
2008-02-11
Lead Vocalist
Seonyou
2008-03-20
Main Rapper, Lead Dancer, Sub-Vocalist, Maknae
