A machine produced and sold by The En Family, works as a scanner which evaluates the smoke power and type of magic in raw numbers by putting a hand inside.
Risu saved enough money to buy one of these when it just came out, and tested it, revealing his Curse-type of magic and sealing his fate by telling Aikawa about it. This would eventually lead to his dead at the hands of The Boss.
A month after The Cross-Eyes takeover the En's Mansion, a horde of Magic Users came to work for them, anticipating this, Ton told Natsuki about his recent discovery, the aforementioned machine, in order to segregate those with powerful magic and stop any attempts of assassination against The Boss. Eager to know what type of magic she had, Natsuki tested the artifact.