Siyeon

Siyeon (시연), born Lee Si-yeon (이시연) on May 16, 2000, is the main vocalist and guitarist of QWER under Tamago Production. Before joining the band, she spent two years inside NMB48's Team M in Osaka, giving her a rare crossover path from the Japanese idol system into a Korean live-band setup.

That background matters because Siyeon gave QWER a frontwoman with polished idol instincts from the start. Her voice carries the melodic center of the band's catalog, while her guitar work adds to the twin-string dynamic she shares with Hina. In a group built from creators and streamers as much as traditional trainees, her stage experience helped stabilize the jump from online curiosity to serious release cycle.

After graduating from NMB48 on August 8, 2023, she was announced as QWER's final member five days later and debuted with Harmony from Discord that October. Since then she has fronted the band's rise through Manito, Algorithm's Blossom, the 17-city ROCKATION tour, and the 2026 CEREMONY comeback. The pace of that transition is still one of the sharper reinventions in recent idol-band traffic.