Gotsume Clan History

Clan history: after the fifth great ninja war the religious movement known as “the Disciples” set out to create a shinobi technique that would equal the power of the sharringan. This took many years of research before it was achieved. Sakurai Gotsume was the first successful test subject and the person to start the clan. A maid by trade she was used as a test subject because of a rare blood type she possessed (b-) making her a suitable candidate. The Desciples did not put Sakurai onto the battle field. Instead they were more conserned with being able to pass on her abilities through birth. It would now seem that only clan members with the same rare bloodtype can ever use ryoushigan. And enemies with the same bloodtype are only capable of stealing it either.

(Btw kagai if your reading this and you want to edit and or make the history longer just pm me and I can replace this)