Mystic is and will always be a thrash company for wasting two years of her life for nothing. But after calming myself, I can 1.0 % see why they released her from debuting in their NGG. All though I disagree strongly.
Ageism and the infamous Kpop beauty standard are the culprits. And thrash Mystic decision to change everything. Miyu would have fit the old lineup with, from left Soomin, Hwang Jimin, Doyoon and Sua, who all left except Sua. Jeha was also a part of the Mystic rookies, but she left in 2019 and would have debuted with this lineup.
This is the current one. Sua from left is the only from the original lineup. See what Mystic is aiming for?