Than again it's not like Black wasn't virile enough to impregnate Zephyr!.
Since simply by the virtue of being a progenitor his sperms were already more fertile than even an ascension level 99, the highest mortal ascension level — Male lifeform and contained an insane amount of energy.
However it still wasn't enough to impregnate a woman above his own phase though he sure can impregnate anyone in the mortal phase even a woman at the ninth rank would have her eggs fertilized by him if he cummed in her womb nevertheless it was an entirely different story for Zephyr altogether.
Considering as an incomplete primordial. Zephyr's very own body was unlike that of any mortal woman Black could ever find.
Meaning Black still won't be able to impregnate her despite her body having already reached full maturity both in functionality and appearance with her IQ and EQ equivalent to an ascension level 80 or above adult with her own ascension level still being at level 74.
