Noah and the Demons had covered their faces only as a form of protection against eventual recording devices hidden inside the Balvan mansion.
That measure was necessary in case something went wrong in the attack, and the Elbas family intervened to blame the Hive. There would be no proof without images, and the words of a medium-size noble family couldn't match those of an organization backed by a rank 6 existence.
Also, the Demons had disappeared for one thousand years, and they didn't appear publicly yet.
The noble families around the Balvan mansion wouldn't be able to link those two rank 5 cultivators to the Hive even if they revealed their abilities.
On the other hand, Noah's abilities were quite famous by then, so his hood did very little in hiding his identity.
However, his spells had drastically changed in the last years, which gave him some leverage in the case someone inside the mansion survived the attack.
Adrian trembled when he felt Noah's gaze focusing on him.