One man, in particular, broke down under very efficient questioning of the torture master called back from retirement just for that.
The man revealed that the device was meant to gather the power of light mana and increase the capabilities of light magicians and that he agreed to be subjected to the experiment because of his honest wish to be on the King's Guard which he couldn't do because of his lacking magic power.
He claimed that he didn't work with any foreign forces and the whole experiment was performed by the team of researchers from the Bellcephora kingdom... and yet he didn't dare to speak their names.
Even so, after being placed under more pressure he admitted that the investors behind the research team weren't from the Bellcephora kingdom after all, as in exchange for the magic-strengthening device he had to share whatever news and information he gathered while stationed at the royal castle.
