LIGHTSUM Members Profile [UPDATED] | Facts, Age, Positions, And More

LIGHTSUM is Cube Entertainment’s first girl group in 3 years. It consists of 6 members: Sangah, Chowon, Nayoung, Hina, Juhyeon, Yujeong. Huiyeon and Jian departed the group on October 25, 2022.

Note: this profile will be regularly edited to add more information in the future, so please check it out frequently. If you have any suggestions, please let us know in the comment section below.

LIGHTSUM Number of members: 6

LIGHTSUM’s fandom name: SUMIT

LIGHTSUM’s Debut date: June 10 with Vanilla

LIGHTSUM‘s Leader : Juhyeon

LIGHTSUM Official social media account links:

Twitter: @LIGHTSUM

Facebook : @LIGHTSUM

Instagram: @LIGHTSUM





Where to get LIGHTSUM news: here.

Current LIGHTSUM Members


Stage Name: Juhyeon
Birth Name: Lee Ju Hyeon

Nationality: Korean

Position: Leader, Main Dancer, Lead Vocal
Birthday: April 8, 2004
Zodiac Sign: Aries
Height: 168cm (5’5)
Weight: 48kg (104 lbs)
Blood Type: AB

Facts about Juhyeon

  • In 2017, Juhyeon was a contestant in KBS’s survival show The UNIT
  • She was eliminated in the episode 14th of UNI+ Gafter ranking in 25th place.
  • Rain was so impressed by her dancing and stable vocals that he asked her to come to his agency
  • She is known for being a talented dancer
  • She was the 2nd member to be revealed in her group
  • She had a cameo in PENTAGON‘s “Young” music video
  • Juhyeon’s role models are BoA and HyunA
  • She trained for around 7 years
  • Her hobbies include watching dramas, listening to music, and going for walks
  • In 2018 she joined the reality show Dancing High showcasing her dancing abilities again but she was eliminated in the second episode.


Stage Name: Hina
Birth Name: Nagai Hina

Nationality: Japanese

Position: Sub Vocal
Birthday: April 7, 2003
Zodiac Sign: Aries
Height: 158 cm (5’3)
Weight: NA
Blood Type: NA

Facts about Hina

  • She attended MARU Dance Studio.
  • She is the only Japanese member in the group
  • She is the first female Japanese idol under Cube Entertainment


Stage Name: Yujeong
Birth Name: Lee Yu Jeong

Nationality: Korean

Position: Sub Vocal
Birthday: June 14, 2004
Zodiac Sign: Gemini
Height: 160cm (5’2)
Weight: 41kg (90 lbs)
Blood Type: AB

Facts about Yujeong

  • Yujeong was previously on MNET ‘Produce 48’ [she finished on rank #51].
  • She is the last member to be revealed in this group.
  • Yujeong has trained under Stardom Entertainment, Fantagio Entertainment, and CNC School.
  • she currently attends the School of Performing Arts Seoul as a Theater and Film student.
  • She was a cheerleader for 5 years.


Stage Name: Nayoung
Birth Name: Kim Nayoung

Nationality: Korean

Position: Main Vocal, Lead Dancer
Birthday: November 30, 2002
Zodiac Sign: Sagittarius
Height: 154cm (5’1)
Weight: 43kg (94 lbs)
Blood Type: O

Facts about Nayoung

  • Nayoung was previously on MNET ‘Produce 48’ and when she appeared then, she had been training for 1 year and 7 months
  • Nayoung is rumored to have passed the first round of auditions for FNC, Woollim & Source Music
  • she finished on rank #21 on MNET ‘Produce 48’
  • Her hobbies include rope, imitating people, and acting.
  • She speaks Japanese
  • She is friends with FANATICS‘ Doah and fromis_9‘s Gyuri.
  • She trained for four years and five months in total
  • She was born in Chuncheon, Gangwon-do, South Korea.
  • She is a former Banana Culture trainee, when she appeared on MNET ‘Produce 48’ she used to be part of that agency.


Stage Name: SANGAH
Birth Name: Yoon Sang Ah

Nationality: Korean

Position: Lead Dancer, Rapper
Birthday: September 4, 2002
Zodiac Sign: Virgo
Height: 168cm (5’6)
Weight: NA
Blood Type: NA

Facts about SANGAH

  • Her visual have similarity to idol-actress Nana and BLACKPINK‘s Jennie.
  • Sangah was a secret trainee who was never announced through CUBE TREE, thus, not many information are known about her prior to her debut
  • It is rumored that she passed many auditions for agencies including Kakao M, MLD Entertainment, and CJ ENM.


Stage Name: Chowon
Birth Name: Han Cho Won

Nationality: Korean

Position: Main Vocal
Birthday: September 16, 2002
Zodiac Sign: Virgo
Height: 168cm (5’6)
Weight: 50kg (110 lbs)
Blood Type: O

Facts about Chowon

  • In 2018, she became a contestant on Mnet’s reality survival show Produce 48. She was eliminated in the finale after ranking 13th place.
  • On August 21, 2019, it was announced by Cube Entertainment that Han Cho Won had officially signed an artist contract with them.
  • Her hobbies are playing the piano and eating.
  • he made her movie debut in Bad Guy after originally training to be an actress.
  • Her specialty is composing
  • she trained for four years and eight months in total.
  • her Catholic name is Sofia
  • She narrowly didn’t make the cut due to the Produce voting manipulation scandal, her actual final ranking was no.6 overall and she should’ve made the cut.

Former members


Stage Name: Huiyeon
Birth Name: Oh Huiyeon

Nationality: Korean

Position: Sub Vocal
Birthday: August 1, 2005
Zodiac Sign: Leo
Height: 159 cm (5’2)
Weight: NA
Blood Type: NA

Facts about Huiyeon

  • She is rumored to be a strong vocalist
  • She also attended two idol training academies
  • She passed the first round auditions to P-Nation, JYP & Snowball Entertainment.
  • She left the group as of October 25, 2022


Stage Name: Jian
Birth Name: Kim Ji An

Nationality: Korean

Position: Sub Vocal, Rapper, Maknae
Birthday: December 4, 2006
Zodiac Sign: sagittarius
Height: NA
Weight: NA
Blood Type: NA

Facts about Jian

  • she is the youngest member of the group
  • Jian was also a secret trainee as well so not much is known about her yet
  • she’s one of the youngest idols working in the kpop industry right now, with very few other idols born in 2006 who work in the industry as of yet.
  • Jian left the group as of October 25.

Which one of the members is your favorite?

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