From what we know she hasn't legally changed her name. She used Siyeon as first stage name but then she probably had to change it again because there was another Siyeon that debuted before her. -R
Kim Nayoung is a Gugudan member.
Lim/Im Nayoung is the same person but the surname has a different romanization.
-R
No sorry -R
We did! -R
Probably because the meaning of the first line didn't suit music show requirements -R
She is close to everyone in the group but it looks like it's Kyulkyung -R
Most used is Baessong -G
No, sorry. -G
We don't know. -G
Just gossip -G