2018: Debut with GWSN
She was revealed as a member of GWSN on June 21, 2018 and debuted with the group on September 5, 2018, releasing their first mini album The Park In The Night Part One.
On September 13, she became a contestant on the vocal reality survival show V-1. She was eliminated in the first round, after losing to WJSN's Yeonjung.
- "Color Me" (with Son Dongwoon) (2018)
- 8282 - Davichi on IDOL RADIO
- 진심 - Lee Ye Joon
- 에잇(eight) - IU
- Goodbye - WENDY
- 솔직하게 말해서 나(To be honest) - Kim Na-young
- Don't Forget Me - Baek Ji-young
- Santa Tell Me - Ariana Grande (With Lena)
- 말이 없다 (No Words) - MOMO X
- RED-SUN(021) - MUSIC VIDEO MAKING FILM
- HAPPY SEORYOUNG DAY 요정리더 탄신일🧚♀️(The Fairy Leader's Birthday🧚♀️)
- Countdown with GWSN ep.4 | All day long with SEORYOUNG feat 서령이의핑크서사기/연습일지대공개
- Tweaks ~ Heavy cloud but no rain Vertical Video
- Her specialities are singing and Japanese.
- Her hobbies are playing guitar and reading books.
- She shares a room with Miya and Soso.
- Fans say that she looks like Taeyeon of Girls' Generation.
- In GWSN, she wants to shine more as a group.
- She has a lot of passion and energy.
- She wants to be seen as an in-depth and soulful person.
- She wants GWSN to be a group that people will remember forever.
- In her school, Seoryoung won several awards from music competitions; she won second prize in her first year and first prize in her second year.
- The GWSN member's and Groo call her the fairy leader.
- GOT YA! GWSN (Mnet, 2018)
- V-1 (tvN, 2019) - contestant
- Seoryoung's Fancafe Profile. Retrieved September 2, 2018.
- Seoryoung's interview with The Star. Retrieved September 2, 2018.
- Profile Criteria. Retrieved September 2, 2018.
- V-1: Episode 1
- 3.1 YouTube: GWSN Interview and Self-Introduction with On the Rise at Pops in Seoul (Arirang TV)