Their current age by Korean age is:
Lily - 20
Haewon - 19
Sullyoon - 18
Jinni - 18
Bae - 18
Jiwoo - 17
Kyujin - 16
now a reminder that they will debut in feb 2022, which means they will all add another year to their K age, so
Lily - 21
Haewon - 20
Sullyoon - 19
Jinni - 19
Bae - 19
Jiwoo - 18
Kyujin - 17
not sayin they will debut with sexy concept but won't be surprised if they will do it even in their rookie period.
why? well because 18 is an age when you become adult in all those countries, and once again remember that in january 2023 they will add another year to those up. So altough by international age they might seem young now but because they will debut not in 2021 but in 2022 it actually works in their favour and might let agency expand more concepts.
it would be very on brand with 



