Cross ended up getting in trouble after killing the teachers sent by the kingdom. I assume they believed that he was on their side instead of the academy's because he was an upcoming duke. They charged him with murder, but it didn't matter since they had attacked a student in the academy and there was over a hundred witnesses. And since Viv wasn't officially a student, nothing happened to her for killing the other two teachers. Whom for some reason, were all weak to begin with. If the kingdom was going to send spies, why not send some competent ones?
I knew Cera was involved in killing the higher ups, but since they don't know it's her doing, they're trying to figure out why supporters of the kingdom keep dying. I don't fully understand why Cera is doing this either as she has done enough for the academy already. I think she should stop. Maybe I'll tell her when I get home.