Sophia's heart shuddered for a moment seeing Seph's pleasant smile but behind that killer smile she could only see sharp fangs hidden beneath a facade.
She didn't know what kind of Serum it was but the way he spoke about it was enough to make her understand the crux of the matter. Moreover, she was really suspicious about that.
If it turned out to be extraordinary, with one Serum he could not only gain a huge economic superiority, but he could also control the underground forces while making the army backing him. In the end, he will get a huge trump card.
Though one can't ward off the disaster that things might go in the wrong direction lead to destruction, that's only in the case of the weaker ones.
Someone like the Greymore family who had a rich history and personal forces, no one would be crazy enough to snatch the thing from their hands.