Acting · geboren 2000-01-22 · Seoul, South Korea

이서연

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.

Bekannt aus

• 출장 십오야 (2021) – Self
• 아이돌학교 (2017) – Self - Contestant
• 그래도 괜찮은, 회복회 (2018)
• 그래서 괜찮은, 회복회 (2019)
• 리무진서비스 (2022) – Guest
• 프로미스의 방 (2017)
• 2022 fromis_9 concert ＜LOVE FROM.＞ IN JAPAN 全曲ノーカット版 (2023)
• 프롤로그_프로미스의 방 엿보기 (2017)
• 재친구 (2023)
• fromis_9's Summer Night (2022) – Self
• fromis_9's Autumn Night (2022) – Self
• 덕밥집 (2025) – Self
• 돌들의침묵 (2020) – Self