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Y:SY
Acting
22 Jan 2000 (26 years)
Seoul, South Korea
Biography
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.
Also Known As
이서연, 서연, Lee Seo-yeon, Yi Seo-yeon
Photos
Y:SY's Movies
Y:SY's TV Shows
87%
The Game Caterers
12 Mar 2021
90%
Idol School
13 Jul 2017
65%
Welcome to Heal Inn
16 Oct 2018
65%
We See Winter
13 Feb 2019
85%
Lee Mujin Service
22 Feb 2022
100%
Fromis's Room
26 Oct 2017
0%
프롤로그_프로미스의 방 엿보기
19 Oct 2017
0%
Jae Joong and Friends
27 Jul 2023
0%
fromis_9's Summer Night
04 Jul 2022
0%
fromis_9's Autumn Night
05 Sept 2022
0%
Duckbap House
18 Nov 2025
0%
The Silence Of IDOL
11 Dec 2020