Fin.K.L members are showing off their playful chemistry as they prepare for their long-awaited full-group return.

On October 7, Ock Joo Hyun shared photos and videos from the group’s practice room, revealing an ongoing joke between Lee Hyori, Sung Yuri, Lee Jin, and herself.

The fun began when Sung Yuri uploaded a close-up photo of Lee Hyori wearing glasses with her hair partly covering her face. She jokingly captioned the post, *“Close coverage.”*

Lee Hyori soon joined the game by posting extreme close-up photos of the other members, turning their practice sessions into a lighthearted photo battle.

Ock Joo Hyun later shared more behind-the-scenes moments and wrote, *“Another peaceful day at the close coverage scene. When your heart feels sad or you feel small... close coverage.”*

She then jokingly declared the group's youngest member Sung Yuri the most skilled at the game, writing, *“The youngest, Yuri, is the real master.”*

The casual exchanges have gained attention as fans get another glimpse of the members' longtime friendship ahead of Fin.K.L's return.

Fin.K.L recently confirmed that all four members — Lee Hyori, Ock Joo Hyun, Lee Jin, and Sung Yuri — have reunited for full-group activities.

Their agency, Gemstone E&M, previously announced, *“Lee Hyori, Ock Joo Hyun, Lee Jin, and Sung Yuri have reunited under the name Fin.K.L. We are preparing full-group activities together.”*

The reunion marks Fin.K.L's return to full-group promotions after approximately 21 years, making their playful practice-room updates even more meaningful for longtime fans.