Technically...
'The Sons of Virgins' doesn't refer the mercenaries themselves being virgins, but rather that their mothers are.
That raises way too many uncomfortable questions!
Thanks for the chap. Damn, it was cool to see the rules behind exp. I love how you make everything relate back to mana hence showing that it is the purest form of energy in that world. Gotta say, you really thought this concept out. Loving it.