|Birth Name||Kim Se-jeong (김세정)|
|Stage Name||Sejeong (세정)|
|Siblings||one older brother|
|Date Of Birth||August 28, 1996|
|College||Hanyang Women’s University|
|Birthplace||Gimje, North Jeolla, South Korea|
|Love and Affairs|
- She is the former member of Girls Group I.O.I which disbanded in 2016 and is current member of Gugudan.
- She rose to fame as runner-up contestant in Produce 101 Tv show.
- She played the lead role in hot Tv drama School 2017, in which she was paired with Kim Jung hyun.
- She was born in Gimje but moved to Anyang and was living in her aunt house with her mother and brother.
- She is doing majors in practical music from Hanyang Women’s University.
- She entered in television show K-pop Star 2 as a contestant but later was eliminated but also brought back with wild card entry.
- She admires IU.
- She is also member of Gugudan Semina which consist of Nayoung, Mina and Sejeong.
- Flower Way
- I Like You, I Don’t
- Star Blossom
- If Only
- The Sound of Your Heart
- School 2017
- K-pop Star 2
- Produce 101
- Talents for Sale
- Boom Shakalaka
- Immortal Songs 2
- 1 vs 100
- King of Mask Singer
- Law of the Jungle in Sumatra
- Get It Beauty
- Battle Trip
- Popularity Award, Actress from 1st The Seoul Awards 2017.
- Best Challenge Award from 11th SBS Entertainment Awards 2017.
- Best New Actress from 31st KBS Drama Awards 2017.