Number 10

Ainz was one of the generals of the academy with his seat number being 10, he had just gotten hold of a terrible news making him very anxious, so at this moment even if he didn't want to use his symbiote bloodline, out of being anxious he was releasing the pressure of his symbiote bloodline making every student who walked past him to fall on the floor, due to the sheer number of pressure and illusions he was subconsciously releasing from his body.

Some students who had been chit-chatting suddenly fell on the floor unconscious, as they walked past however Ainz didn't care he was more worried about the problem at hand, even if they were to lose their consciousness due to the pressure and illusion he was subconsciously releasing.