Acting
Jan 21, 2000
Seoul, South Korea
Y:SY
Acting
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.
Feature Films (1)
fromis_9's LOVE FROM. IN JAPAN concert that took place in Tachikawa Stage Garden on 2022 October 7th.
fromis_9 concert ＜LOVE FROM.＞ IN JAPAN
Television & Series (12)
While fall was quickly approaching, fromis gave us a last taste of their radiant charms by releasing Welcome to Heal Inn - A V LIVE web series about food, friendship and life but, above all, about healing.
Welcome to Heal Inn
Idol School is a reality girl group survival show. The program aims to form a 9 members girl group out of 41 female participants, training them in singing and dancing in the span of 11 weeks.
Idol School
Watch the nine winners of Mnet’s “Idol School” take their first steps as an idol group! This reality program follows “Fromis” every step of the way as they get ready for their debut.
Fromis's Room
A webseries where Na Young Seok, a variety show producer, caters people his iconic games from 'New Journey to the West'.
The Game Caterers
"Lee Mujin Service" is a high-quality live content in which MZ generation's representative singer-songwriter Lee Mu-jin, along with other artists, provides the best music service that catches the eyes and ears of music fans around the world.
Lee Mujin Service
Kim Jaejoong hosts numerous stars who wants to be friends with him. With the goal of making 100 friends through the show, he will cook for his guests, get to know them, and hopefully forge new friendships.
Jae Joong and Friends
Era after era, fromis_9 periodically attended Naver NOW radio shows only as guests, which changed when they got Summer Night to host. In it, the girls enact a group of friends who rent a share house together, play fierce party games, and laugh for hours on end.
fromis_9's Summer Night
A week after fromis_9’s Summer Night aired its last episode, Autumn Night was ready to start. Keeping the essence of the first season, the party games and laughter continue with the addition of a new segment dedicated to counseling fans, ending each episode on a tender note.
fromis_9's Autumn Night
This web variety show follows idols as they work at a store owned by TVXQ! Max Changmin, where they personally design and cook special lunchbox menus for fans.
