Most of the students and even many of the teachers weren't old enough to remember the last time they had gone to war with those from the Demonic Faction.
There would be scuffles between groups now and then, and at the martial arts tournament, they would witness some of the techniques used by the Demonic Faction.
It was why Dame thought that even if Raze was to use some skills from the Demonic Faction, he would be fine. Especially the Descending Steps that so few individuals chose to practice.
However, the Devil's Sword formations. This was different; it was quite a popular skill among the higher-ups in the Demonic Faction.
Not only that, but the event that Dame thought would be on a smaller scale had many eyes watching them, including the leaders of the main Clan. Those that had fought and studied the Demonic Faction well.