Jian (지안)

As the maknae of LIGHTSUM, Jian — born Kim Ji An on November 4, 2006 — holds the youngest position in the Cube Entertainment girl group, contributing as a sub vocalist and rapper. Beyond her role in the lineup, the available material does not support further detail on her individual activities, discography, or achievements at this time.

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To produce a fuller profile of Jian, additional sourced material — covering LIGHTSUM's discography, her individual contributions, chart performance, or notable career moments — would be needed. The BTS Jin articles provided cannot be used as a basis for her profile.