Girl that have been dubbed the "Progress" are those which have awakened to the superpower "Exceed". These girls, from the five different worlds that exist, are kept safe and trained at Seiran Academy. They train day and night with their alpha drivers, a person who has the ability to enhance their powers.
Isn't it because it's the 
main base for the Progress?
أليس لأنّها القاعدة الرئيسيّة لبروغريس؟
Hier befindet sich immerhin
das Hauptquartier der Progress.
¿No es porque es la base de las Progress?
¿No es porque es la base de las Progress?
Parce que c’est la base principale
des Progress, non ?
Perché è la sede principale delle Progress, no?
Não é porque é a base principal do Progress?