Y:SY
Acting
2000-01-22 · Seoul, South Korea
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.
Filmography
Duckbap House
2025 · Series
Jae Joong and Friends
2023 · Series
fromis_9 concert ＜LOVE FROM.＞ IN JAPAN
2023 · Movie
fromis_9's Autumn Night
2022 · Series
fromis_9's Summer Night
2022 · Series
Lee Mujin Service
2022 · Series
The Game Caterers
2021 · Series
The Silence Of IDOL
2020 · Series
We See Winter
2019 · Series
Welcome to Heal Inn
2018 · Series
Fromis's Room
2017 · Series
프롤로그_프로미스의 방 엿보기
2017 · Series
Idol School
2017 · Series