The term "nito-ryu" (two-sword fencing) is a general term for the technique of offense and defense with Japanese swords or other swords in both hands (left and right hands).
二刀流（にとうりゅう）とは、両手（右手と左手）にそれぞれ刀もしくは剣を持って、攻守をおこなう技術の総称。