This study examines the use of the social media application Weverse within K-Pop fandoms, focusing specifically on the fandom of SEVENTEEN, known as CARAT. Applying the Uses and Gratifications theory, the research reveals that Weverse functions not only as a source of entertainment but also as a medium for communication and social identity formation among fans. The findings indicate that despite certain limitations such as language barriers and the presence of fake accounts, Weverse remains an effective platform in fostering fan engagement and loyalty. Features like Fan Letter, Hide from Artist, as well asstreaming and voting options strengthen Weverse’s role as both an informative and social tool that bridges idols with their fans