I was interested in the intelligence of the short man whose name I have forgotten. If he had like everyone else, prioritized security and built a magical locker, I would surely have detected it the minute I entered this room.
But he had preferred to hide his information with the use of ordinary materials and a simple machine. Nobody who lives in such a magical world can find this kind of ordinary safe easily.
Fortunately, I sneaked back to see if he was doing anything to block me from going to the black market part of the auction.
When the man closed the secret room and came out, I used teleportation to enter the secret room, which I already knew existed. It was normal that there was no magic inside to detect mana or beings. I used a simple light magic spell and let small balls of light come out of my palm to glow in the dark room...