Thread:Kitsune Tamamo no mae/@comment-28265227-20170521083006/@comment-28265227-20170810101228

@Mikon-san because " Artoria, normally female, was a pseudo-male at the time due to Merlin's magecraft, so Morgan enchanted her with a spell to extract sperm from her. Morgan developed it within her own ovary, and made the child into a homunculus clone of Artoria. " ? (from type moon wikia)