I returned to the academy

I was shocked when I found out from Inari that one of the men who came in today into the office had a den scent on him.

Inari explained that the demon tribes of lust depend mainly on scent and they can easily smell anything, even faint traces.

I too have that skill but the level is too low to recognize a faint smell or even detect it would be not possible. For Inari though that was not a problem as it comes with their race.

I may have found the culprit who placed that demon-summoning ritual.

Well, he is at the top of my suspect list. There is a chance that he came across demons while travelling. Though the demon lands are far away, there is a chance of some demons coming to this kingdom. So I can't tell for sure that he is the traitor who turned against us.