Perhaps all three major military academies had guessed this point, secretly guarding against Amelia's surprise attack, but they could not blatantly hand over victory to the other side when the stalemate persisted. Therefore, Wind Thunder and St. Calina, which led in points, tried to suppress each other without giving in, inadvertently leaving a loophole for Golden Sword Academy, which had the lowest points.
In fact, Apophis had already been subtly controlling the pace in secret, intending to rally all his armed forces to take down the battle once and for all at the last moment.