Person
Y:SY
- Specialty
- Acting
- Birth
- January 22, 2000 · 26 years
- Origin
- Seoul, South Korea
Technical Alias
이서연서연Lee Seo-yeonYi Seo-yeon
Professional Trajectory
Lee Seo-yeon, known professionally as Y:SY, is a South Korean singer-songwriter and rapper under H1GHR Music. She is a former member of the girl group fromis_9, formed through the reality survival show Idol School (2017). She left the group in 2024. She made her solo debut on November 17, 2025, with the digital single Naked.
