the nikata clan settled in rock village 50 years ago back then the clan was peaceful because nobody had anything to fight for except their family.
as the nikata clan took the reign over rock village the clan separated into 4 groups. the groups were : ni 1, ka 2 , ta 6 , a 24 . these groups fought themselves until the strongest users of the nikashou(bloodline limit) were killed. now there are only few of us left but we still have the reign over rock village.