First-generation legendary girl group Fin.K.L is returning as a complete group after about 21 years.

Entertainment agency Gemstone E&M announced today (September 21) that it is officially preparing for Fin.K.L's full-group activities with all four members: Lee Hyori, Ock Joo-hyun, Lee Jin, and Sung Yu-ri.

This marks Fin.K.L's first full-group activity in 21 years, following their digital single "Forever Fin.K.L" released in 2005.

Although they reunited through the 2009 reality show "Camping Club" and released a new song, that was a one-off project tied to the broadcast.

Fans are responding enthusiastically because this is not a one-time event, but a fresh start featuring continuous team activities under the name "Fin.K.L."

Debuting in 1998, Fin.K.L is a K-pop legend that swept music awards by turning every release into a massive hit, including "Blue Rain," "To My Boyfriend," "Eternal Love," and "Now."

They established a pivotal chapter in K-pop girl group history by showcasing an unrivaled spectrum, ranging from innocent concepts to confident and powerful images.

Since then, the members have built top-tier careers in their respective fields as solo singers, broadcasters, musical actors, and actresses.

With the four members, who have spent a long time honing their expertise in their individual paths, coming back together as a single team, expectations are running high for the new stages that "Fin.K.L of 2026" will present.

The agency stated that they plan to sequentially unveil new music and diverse content that goes beyond simple nostalgia, drawing intense attention from the music industry.

(Reported by Kang Sun-ae | Video edited by Jeong Yong-hee | Designed by Yang Hye-min | Produced by SBS Digital News)