On May 4 KST, girl group Billlie successfully held their first ever fan concert since debut, 'Your, I'm B (Belllie've You)', at Myunghwa Live Hall in Yeongdeungpo-gu, Seoul.

On this day, all four members of ASTRO including MJ, Jinjin, Cha Eun Woo, and Sanha showed up to support Moonbin's sister, Moon Sua, for returning to promotions with her group after a lengthy hiatus. 

ASTRO also shared a heartwarming photo taken backstage with Sua after the show, with the caption, "Sua!!! Congratulations on your first fan-con. You worked so hard preparing for it!!! You did so good. Show us more of your great stages from now on." 

Meanwhile, toward the end of the fan concert, Moon Sua relayed, "I have so much gratitude for the members. I'm grateful that they protected Billlie while I was away, and I felt strengthened watching the members on stage. I wished to show this stage to everyone, but there is one person I wish to show it to more than anyone else. I feel like that person is cheering for me somewhere, whether it's somewhere far or somewhere nearby, giving me the strength that I needed, and that was why I was able to smile and stand on stage again with my members again. So I want to say thank you." 

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