Shinsei Clan

The Shinsei Clan was an ancient clan of great glory. However, there is only one survivor with pure Shinsei blood (ie. blood that isn't extremely dilluted over several generations).

History
The Shinsei Clan was a clan that existed around the time of the Sage of Six Paths. The Sage of Six Paths himself was a member of the clan, as were his two sons. Since the only members of the clan at that time were the Sage of Six Paths himself, the Sage's two siblings who supposedly died childless, and the Sage's sons, the clan did not thrive, and the clan was supposedly extinct after the founding of the Senju and Uchiha Clans. However, one man, a descendant of the younger son, founded a small, secretive branch of the Clan that went into hiding. Eventually, the Clan became too weak to hold itself together, and many members died. Only one survivor has been confirmed.