Ha ha, chuckle, chuckle... It was a serious question, guys!
CunningLinguist is right, I'm not talking about nipples or areola bumps. It's as he indicated with the blue arrow in the photo. For the longest time I thought it was a weird thing on just this one girl I'd been with, but when I saw it on my beloved Sora I thought I'd raise the issue. Neither of the girls in question are ladyboys, so what is it???
BTW: XavierKK - lovely boobs, man!