Lineage

Usushiogakure survived the raids and grew on, gaining a place with the other 5 hidden villages as a 6th Great Village. With more Uzumaki it makes sense that traits that denote the head clan would be identified. Rinnegan, Though not common place is a doujutsu connected to the Uzumaki clan. Uzushio's strong alliance with Konoha practically ensured some type of clan interbreeding. AU