As a language model AI, I do not have the capability to predict the future, however, I can provide information and data on the current status of the K-pop music group 'Lightsum'.
Lightsum is a South Korean girl group formed in 2021 under the entertainment company, Play M Entertainment. The group consists of five members: J-US, Yujeong, Jihan, Chaeryeong, and Hina. They made their official debut on April 26, 2021, with the release of their first single album, "Vanilla."
Since their debut, Lightsum has received positive attention and recognition for their unique musical style and synchronized dance performances. Their music and performances have been well received by fans and critics alike, with many praising their potential to become one of the top K-pop groups in the industry.
Lightsum has actively promoted their music through various music show appearances and live performances. They have also shown their strong social media presence, consistently engaging with their fans through various online platforms.
In terms of album sales, Lightsum has shown promising results. According to the data provided by the Gaon Chart, their first single album, "Vanilla," debuted at number 8 on the Gaon Album Chart, with over 20,000 copies sold in its first week. They have also achieved several other milestones, including winning their first music show trophy just two months after their debut.
In conclusion, based on the available information and data, it can be inferred that Lightsum is off to a strong start in their musical career. With their unique musical style, synchronized dance performances, and active promotion, they have received positive attention and recognition from both fans and critics. It remains to be seen how the group will continue to evolve and grow in the future, but the early indicators are positive.