Futaba, it seemed, was not on their side, which was a good thing. Duncan was clearly not himself and continued to hint at some crumpled scroll, presumably a royal decree. The others were either too frightened or were trying to prevent the situation from escalating further. For the students, there were only two possibilities: a) the old ruler of Sakuramoria had finally lost his mind; b) all the teachers had been turned into puppets by a spell similar to the April one.
All that remained was to determine which scenario best fit the current events. Think, Nira, what do all the recent changes indicate? What is Futaba Thyme hinting at? What are they whispering about with Duncan? In the first case, they should have made a citizen's arrest of the senile old man and personally ensured the safety of the academy for the time being. In the second case, they were doomed in any case, but they had a small chance to postpone their fate. How did she answer this question on the exam? Only if the threat is deadly and comes from a royal official, well, it seems that everything fits with her answer.
But how much time will she buy by playing along with them? The next stage will most likely be a declaration of war on neighboring countries, and if not, they will certainly be sent to the front lines sooner or later, and that's when she will get a chance to escape. Yes, it already sounds like a plan, good job, Nira.
Judging by the frightened looks of the students, only Cassia, Vita, Renn, Miho, Tong, Dinoris, and Neomarika were ready to fight.