Who was the last member to announce her debut as a girlhood?

It's sunny (Lee Soon Gyu). She's the last one to go public.

The first public member: Lin Rune

The second public member: Tiffany

Third public member: Kwon Yu Ri.

Fourth public member: Jin Xiaoyuan.

Fifth public member: Choi Soo Young.

Sixth public member: Xu Zhuxuan

Seventh public member: Jin Taiyan

Eighth public member: Jessica

Ninth public member: Lee Soon Gyu.

Send some Tu Tu.