LIGHTSUM! Hello, we are LIGHTSUM!
On April 15, 2021, an intro video was released on LIGHTSUM's social media announcing their name and logo. Later that day, it was revealed that Cube Entertainment was accelerating preparations to debut the group in the first half of the year.
On the midnight of April 19, 2021, Sangah and Juhyeon were revealed as the group's first and second members, respectively. On April 20, Chowon and Jian were revealed as the third and fourth members, respectively. On April 21, Nayoung and Huiyeon were revealed as the fifth and sixth members, respectively. On April 22, Hina and Yujeong were revealed as the seventh and eighth members, respectively. Finally, on April 23, the group's profile photo was released.
2021: Debut with "Vanilla", fandom name, "Light a Wish"
On September 17, LIGHTSUM announced their official fandom name to be "SUMIT". The name means "LIGHTSUM and their fans become one through the medium (it) of LIGHTSUM (sum)."
On September 24, a teaser posted via the group's social medias announced they would make their first-ever comeback on October 13 with the single album "Light a Wish". On this day, the single album, along with its title track "Vivace", was released.
2022: Into The Light
On May 6, LIGHTSUM unveiled three teaser pictures, hinting at a potential comeback. Three days later, a teaser was released for their first mini album Into The Light, set to be released on May 24.
|Sangah (상아)||Lead Dancer, Rapper||2021–present|
|Chowon (초원)||Main Vocalist||2021–present|
|Nayoung (나영)||Main Vocalist, Lead Dancer, Center||2021-present|
|Hina (히나)||Sub Vocalist||2021-present|
|Juhyeon (주현)||Leader, Main Dancer, Lead Vocalist||2021–present|
|Yujeong (유정)||Sub Vocalist||2021–present|
|Huiyeon (휘연)||Sub Vocalist||2021–present|
|Jian (지안)||Rapper, Sub Vocalist, Maknae||2021–present|
- Into The Light (2022)
- "Go Go Bella OST Part 1" ("Dance Dance") (2021)
- Donauinselfest 2022 (2022)
- 2022 UNI-KON (2022)
- KCON 2022 LA (2022)
- KCON 2022 US Tour (2022)
- Gossip Idle (Naver NOW., 2021-2022) - guest (eps. 0, 69)
Awards and nominations
|Korea First Brand Awards|
|2022||LIGHTSUM||Rookie Female Idol||Won|
|Mnet Asian Music Awards|
|2021||LIGHTSUM||Best New Female Artist||Nominated|
- Chowon, Nayoung, and Yujeong were contestants on the survival show Produce 48.
- Juhyeon was a contestant on The Unit and Dancing High.
- All of the members were born in the 21st century.