User blog comment:Cococrash11/Hollows breeds with humans/@comment-919115-20100502034247

well, allow me to "peddle" one more "crack theory". Hollows and Arrancars can bleed, which mean they have to have some sort of inner workings, like a circulatory system of some sort. whose to say they dint have reproductive systems. I'm just saying it's possible and Kubo has never said they haven't so unless Kubo says so it's all up to imagination I guess