ASTRO Moonbin’s Concern For Billlie’s Moon Sua Proves Their Amazing Sibling Bond

ASTRO‘s Moonbin and Billlie‘s Moon Sua have an incredible sibling relationship that has been proven time and time again. Whether they’re covering songs together, showing off their outstanding skills, filming TikToks of each other’s songs, or encouraging each other to follow their dreams, they always seem to be there for one another.

In a recent interview, Moonbin spoke more directly about his relationship with his younger sister. He explains that he was definitely proud of his sister since she had worked so diligently to achieve her dream of standing on stage.

Well, when I first saw [Moon Sua] on the stage I had mixed feelings. My sister was a trainee for a long time. We talked a lot about our career. So I wanted her to do whatever she likes.

— Moonbin

And while Moonbin can tell how much his sister enjoys performing…

She seems to enjoy being on stage and is confident in what she does. So as a brother, I’m really proud of her.

— Moonbin

He admits that he was concerned about his sister following in his footsteps, given how brutal being a K-Pop idol can be.

But at the same time, I also know how tough it is in the beginning. I just hope that she’ll stay strong and happy.

— Moonbin

And Moonbin also assures fans that even though he doesn’t consider himself “the nicest brother,” he makes sure to take care of his sister.

I’m not the nicest brother but if my sister wants something to eat, I buy it for her. I don’t say anything even if she uses my credit card.

— Moonbin