Yuri has since regrouped with Cool. The band"s lineup stayed the same from the second album onwards. In 2004, though, Cool was reportedly in danger of breaking up due to tensions within the band.
The group eventually broke up after the release of their tenth album in 2005.
Becoming friends in the 1990s while performing with their respective groups, the two had been discussing a possible joint project for 10 years. Their second album, Addict 2 Times, was released in late 2007.
In 2008, Cool announced that they would be regrouping. Yuri stated that she missed performing their trademark dance songs in the summer, even while still performing as part of Girl Friends.
The group then released their 11th album in the summer of 2009.
On October 17, 2012, it was reported that Yuri had been accidentally killed in a fight in Gangnam, Seoul, but this was revealed to be a case of mistaken identity. "Mississippi Kang" and Yuri were supposedly very physically similar, causing a misunderstanding as to the identity of the victim.