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Cha Eun-woo's "Number Leak" Ignites Fans with Innovative Promotion
4 Nov
Summary
- Cha Eun-woo teased fans with a phone number, sparking a frenzy
- The number was part of a creative ARS (automatic response system) campaign
- The campaign promotes Cha's upcoming second mini-album "ELSE"

On November 4, 2025, Korean singer and actor Cha Eun-woo surprised his fans with a cryptic social media post, teasing them with a phone number and the phrase "Call me now, before the sound is gone." This sparked a flurry of activity as fans rushed to call the number, with some even reporting they got through and heard Cha's voice, leading to ecstatic reactions.
However, the truth behind this "number leak" was an ingenious promotional strategy for Cha's highly anticipated second mini-album, "ELSE," scheduled for global release on November 21, 2025. The creative event showcased a new way for Cha to connect emotionally with his fans through an ARS (automatic response system) format, which Yonhap News reports as a novel approach to idol promotions.
While Cha is currently serving in the military, he continues to maintain a strong connection with his fans through innovative content. This unique campaign highlights the evolving ways K-pop idols engage with their audience beyond conventional methods, keeping anticipation high for Cha's upcoming album release and showcasing his talents further despite his active duty.




