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CompanyCube Entertainment
Year Debut2021
Year Active2
Year DisbandedN/A

Not Ranked



LIGHTSUM (라잇썸; debuted Jun 10, 2021) is an six-member South Korean girl group under CUBE Entertainment. LIGHTSUM debuted on June 10, 2021 with the single Vanilla. Their members are: Sangah, Juhyeon, Nayoung, Chowon, Yujeong, and Hina. Huiyeon and Jian left the group in October 2022.

# of Members6
MembersSangah, Juhyeon, Nayoung, Chowon, Yujeong, Hina
Former MembersHuiyeon, Jian
Oldest MemberSangah (born Sep 4, 2002)
Youngest MemberYujeong (born Jun 14, 2004)
DebutJun 30, 2020June 10, 2021
CompanyCube Entertainment

LIGHTSUM Member Ages

LIGHTSUM Age Ranking

Ranked from oldest to youngest.

1. SangahSep 04, 200221 years old
2. ChowonSep 16, 200221 years old
3. NayoungNov 30, 200220 years old
4. HinaApr 07, 200320 years old
5. JuhyeonApr 08, 200419 years old
6. YujeongJun 14, 200419 years old

LIGHTSUM Member Heights

LIGHTSUM Height Ranking

Ranked from tallest to shortest.

1. Juhyeon1.71 m (5'7")
2. Sangah1.68 m (5'6")
3. Chowon1.68 m (5'6")
4. Yujeong1.60 m (5'3")
5. Hina1.58 m (5'2")
6. Nayoung1.55 m (5'1")

Members and Position(s)


LIGHTSUM is composed of six members born between 2002 and 2004. Their names are: Sangah, Juhyeon, Nayoung, Chowon, Hina, and Yujeong. The oldest member is Sangah (born Sep 4, 2002). The youngest member (maknae) is Yujeong (born Jun 14, 2004). LIGHTSUM has 5 Korean members and 1 Japanese member. Hina is the only foreigner; she was born in Japan. The rest of the members are Korean.


Sangahrapper, lead dancer
Chowonmain vocalist
Nayoungmain vocalist, lead dancer
Hinasub vocalist
Juhyeonleader, main dancer, lead vocalist
Yujeongsub vocalist, maknae
Huiyeon (former)sub vocalist
Jian (former)rapper, sub vocalist, maknae

Vocal Line: Chowon, Nayoung, Juhyeon, Hina, Yujeong, and Huiyeon.

Dance Line: Juhyeon, Sangah, and Nayoung.

Rap Line: Sangah and Jian.

MBTI Personality Types

MembersMBTIPersonality Traits
SangahENFPExtroverted, intuitive, feeling, and prospecting
ChowonINFJIntroverted, intuitive, feeling, and judging
NayoungENFPExtroverted, thinking, feeling, and prospecting
HinaESFJExtroverted, observant, feeling, and judging
JuhyeonINTJIntroverted, intuitive, thinking, and judging
YujeongESFJExtroverted, observant, feeling, and judging
Huiyeon (former)ISFPIntroverted, observant, feeling, and prospecting
Jian (former)ENTPExtroverted, intuitive, thinking, and prospecting

Fun Facts and Trivia

  • LIGHTSUM was CUBE Entertainment’s fifth idol group, following CLC, Pentagon, (G)I-DLE, and BTOB.
  • LIGHTSUM was the first group to debut from CUBE Entertainment since the debut of (G)I-DLE in May 2018 (three years prior).
  • The oldest member of LIGHTSUM is Sangah (born Sep 4, 2002).
  • The youngest member (maknae) of LIGHTSUM is Yujeong (born Jun 14, 2004).
  • There is an age gap of 4 years between the oldest member (Sangah) and the youngest member (Jian).
  • The leader of LIGHTSUM is Juhyeon.
  • LIGHTSUM is the first group from Cube Entertainment to have all members born in the 21st century.
  • The tallest member is Juhyeon with a height of 171 cm (5’7”).
  • The shortest member is Nayoung with a height of 155 cm (5’1”)
  • Tall line: Juhyeon, Sangah, Chowon, Jian.
  • Short line: Yujeong, Huiyeon, Hina, and Nayoung.


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