Quote Originally Posted by depthcharge
What??? No explanation needed. People can clone a cow, sheep, dog, goat, piece of liver, bone marrow... therefore with ninjutsu, cloning an eye is easy.

Everyone should be acceptable with the fact that cloning or even breeding programs is possible. After all, ninjas cant possible be trained to not want sex....Just look at Sakura, from young she has been wanting to find a soulmate.
And In times of war, people mate more because of the instinct of survival. Please dont be surprise to find hidden villages in other countries with pool of Bykugan or even sharingan.
No, a sex farm for Sharingan and Byakugan would not in the least surprise anyone reading this manga. I thought it was pretty obvious this is probably going on.