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CUBE Entertainment introduces Juhyeon and Sangah the first two members of the new girl group LIGHTSUM | allkpop
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Update: Cube Co-Founder Hong Seung Sung's New Girl Group HOT ISSUE Shows Full Line-Up In 1st Group Photo | Soompi
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Cube Entertainment Co-Founder Hong Seung Sung's New Girl Group Reveals Group Name And Logo - KpopHit - KPOP HIT
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CUBE Entertainment launches, new girl group LIGHTSUM, Debut their official YouTube channel: members revealed - The Silly TV
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