'Girls Planet 999' Kim Suyeon reportedly to likely join Mystic Story's upcoming girl group 'Billlie', Knetz gets excited.

Kim Suyeon, who was loved by her appearance in Mnet's "Girls Planet 999: Girls' Competition," will debut as Mystic Story's first girl group Billlie.

According to OSEN coverage on the 26th, Kim Suyeon is likely to join Billlie, who is set to make her official debut in November.

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Netizen comments : 

- Heol she's joining?? 

- Heol. 

- Oh. 

- I expected it, but it's amazing that it's real.

- Congratulations! 

- Heol Suyeon-ah ㅠㅠㅠㅠㅠ

- Weren't you planning to debut soon? That's amazing.

- Wow, it's decided quickly? 

- Huh??? 

- There's Kim Soohyun and Kim Suyeon. I'm looking forward to it.ㅜ