Board Thread:Theories and Speculation/@comment-26152226-20150227163755/@comment-1512913-20150227210330

Seelentau wrote: What does the Sharingan have to do with the curse? They both share the connection to bad feelings, but that's it. There's never been a connection made between the curse and the Sharingan. Tobirama explains this in Shippuuden 366.