Kyle's time in the Academy seemed to be passing very peacefully as the only thing he did for the next five months was to attend lectures, train, and learn about Arrays.
Even though he was confined within the Academy he didn't mind it because he knew he wasn't strong enough yet.
During these months he didn't notice any changes in his body. Everything stayed normal. The disadvantage was that it was too normal and Kyle became worried because he showed no sign of a breakthrough even though he was working as hard as everyone else.
Unlike him, the others were progressing at the same speed as before.
Alec was already (C-)-Rank so everyone knew it would take some time for him to break through again but two months later Carcel broke through to to (D+)-Rank while training.
His breakthrough was a surprise for all the students and professors but the excitement died down and everyone became numb because Mia also broke through to (D)-Rank after a week.