UDTT

우당탕탕 소녀단

u-dang-tang-tang son-yeo-dan

UDTT (우당탕탕 소녀단) is an upcoming girl group made up of four members: Risako, Chaehee, Hanna, and Yejin. They will debut under SW Entertainment with their first single album 'School Rush' on 2025.04.29 12PM KST. Their pre-debut single Retry is out on all platforms now.

Risako
리사코 / 理沙子

Age 27
Leader, Dancer, Vocalist

  • Birth Name: Arai Risako

  • Birthday: June 7, 1997

  • Nationality: Japanese

  • MBTI: ENFJ

  • Risako was a contestant on the survival show Girls Planet 999

Han Chaehee
한채희

Age 23
Main Dancer, Vocalist

  • Birth Name: Han Chae Hee

  • Birthday: Nov. 13, 2001

  • Chaehee is a former member of the pre-debut group G.I.G.

Koo Hanna
구한나

Age 21
Main Vocalist, Dancer

  • Birth Name: Koo Hyun Kyoung

  • Birthday: January 20, 2004

  • MBTI: EJST/ISTJ

  • Hanna was a contestant on the survival show My Teenage Girl

Kwon Yejin
권예진

Age 18
Vocalist, Maknae

  • Birth Name: Kwon Ye-jin

  • Birthday: June 26, 2006

  • MBTI: ENTP

  • Yejin was a contestant on the survival show Universe Ticket