819YESISTERS is a squad dedicated to roleplay muses Yerin (GFRIEND) and Umji (GFRIEND & VIVIZ), created as a space for curated projects, media partnerships, and collaborative initiatives.
| **GFRIEND** debuted in **2015** under Source Music and is widely recognized for their strong identity, emotive performances, and lasting influence in the K-pop industry. Among its members, *Yerin and Umji* are known for their warmth, sincerity, and distinct charm—qualities that continue to inspire fans worldwide.
Born on August 19, 1996, Yerin is admired for her bright presence, expressive personality, and versatility across music, variety, and acting projects.
Born on August 19, 1998, Umji is recognized for her thoughtful demeanor, eloquence, and artistic sensitivity, bringing depth and balance to the group.