The members of ASTRO showed their support for Billlie’s Moon Sua at her first-ever fan concert!

On May 4, Billlie held their first fan-con “Your B, I’m B (Belllie’ve You)” at Myunghwa Live Hall in Seoul—and all of the ASTRO members turned up to show love for Moon Sua, who is the younger sister of their late bandmate Moonbin.

After the show, ASTRO posted a photo that they snapped backstage with Moon Sua on X (formerly Twitter) and wrote, “Sua!!! Congratulations on your first fan-con, and you worked hard to prepare for it!!! You did so, so well. Please show us lots and lots of great performances in the future as well.”

Congratulations to Moon Sua and Billlie on a successful first fan-con!

Watch Billlie’s story film with English subtitles on Viki below:

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