
LIGHTSUM's private fans (Sasenpen: fans who follow the private lives of entertainers) were called for self-restraint by the agency. Today (27th), an announcement titled "LIGHTSUM Schedule-related Manner Guide" was posted through the official fan community. CUBE Entertainment, the agency, expressed gratitude to the fans who always support LIGHTSUM, and provided guidance on schedule-related manners for the safety of the artists and fans. They also revealed concerns about safety issues due to fans interfering with the artists' movements and causing inconvenience at the airport. They called for fans to refrain from such behavior and warned that those who violate fan manners related to schedules may suffer disadvantages.
ABEMA will exclusively and free livestream the one-night K-POP and J-POP hybrid music festival “SBI MUSIC CIRCUS HOKKAIDO -DAYBREAK -” from Sapporo’s Daiwa House Premist Dome on Sept. 26, 2026. The lineup includes JAEJOONG, ME:I, Kep1er, izna, ELLY/CB, THE JET BOY BANGERZ, LIGHTSUM, cosmosy, H//PE Princess, and VAYONN, with opening acts Kaya and Resonance and MCs kamion and de_hana.
Six-member girl group LIGHTSUM is drawing attention with a new challenge as they transform into a “Japanese-style idol.” Their lead song “Doshite” from the major debut mini album Re:idol began streaming today. The song portrays sweet, bittersweet one-sided love, and the MV teaser highlights their new visuals. They will also hold their first YouTube live stream, premiere the full MV, and continue activities in Japan with documentary, festival, and release-event appearances.
On the 27th, at Incheon SSG Landers Field, LIGHTSUM's Sanah threw the first pitch for the SSG Landers vs. Samsung Lions game. The group also formed their first unit with members Chowon and Ju-hyun, fulfilling a dream from their trainee days, and released a live clip for their new song 'Beautiful Pain.'
On the afternoon of the 4th, the '2026 F/W Seoul Fashion Week' was held at Dongdaemun Design Plaza in Seoul, featuring LIGHTSUM members Ju-hyun and Cho-won on the runway. Additionally, LIGHTSUM formed their first unit, fulfilling a dream from their trainee days. The event also highlighted the Grammy-winning cover by a Korean artist, gaining renewed attention.
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