After accepting a Vampire's initial embrace, humans became irrational Blood Slaves. The next step was to advance into Blood Demons, and only then could they become Vampires.
Even if these "blood crystals" were not used to make blood essence stones, they could still be given to Victoria as snacks.
Of course, Dark did not advocate such wasteful behavior.
But if Victoria used them not as snacks, but as materials for magitech refinement...
By the rules, Victoria would have to pay credits, perhaps through a loan.
However, the academy's regulations in this regard were not strict, and there were countless ways to exploit loopholes.
The most common method was to give them as gifts.
Usually, birthday gifts or holiday gifts.
Of course, it did not matter even if they did not follow the rules. No professor was bored enough to pursue such matters.
"Let's call it a Halloween gift."
"If the 'Blood Holy Sword' still hasn't been traded away before Halloween arrives, I'll put that into the gift box too."
Dark made the decision, then rummaged through his bag and pulled out a "bronze mirror."
Among the treasures obtained from the Dungeon, there were far too many unknown objects.
Like this "bronze mirror"—it did not react at all even when infused with magic power. Yet in the eyes of the Gate of Truth, it had a value higher than "Meow Meow Grass," equal to the "rhinoceros horn" from earlier.
But when he took out the "bronze mirror," Claire, Pandora, and Winnie were all visibly moved.
Dark could not help sighing at the vast gap between himself and them.
But it was precisely because there was a gap that he had the motivation to catch up.
He placed the "bronze mirror" in the middle and asked, "Can you tell what it is?"