The knight race belonged to the Veil Stalkers. Their mirror-helmed armor made it possible to camouflage.
Hence, the Veil Stalker was completely confident he was able to gather intelligence on the Blood Knights without getting caught, even when their instructor was present.
It was already known in the Veil Stalkers—first-years until the six-years—to obtain intelligence by infiltrating other knight races.
What they were doing was not harmful at all. Their primary role in the kingdom was to gather intelligence in the first place.
Hence, even the Vampire Lord was aware of their actions within the Royal Academy as long as they didn't ignore the rules set by the Royal Academy.
The sigil was keeping them in check anyway.
Hence, the Veil Stalkers could freely infiltrate other races and gather intelligence.
The Veil Stalker infiltrating the Blood Knights was third-year. All the first-years would only learn to infiltrate once the instructors allowed them.
