天心流兵法 世田谷支部より立合抜刀術 鶴ノ羽落し。
臑を払われてとっさに抜刀し鶴足（片足立ち）となり剣を受け、その反動を貰うようにして刀を返して体捌きと共に敵の曲がり（肘）の辺りを切ります。

"Tsuru no Hanebarai (鶴ノ羽払)"

We need to learn it before "Motsure-Dachi (縺太刀)".　
When the opponent tries to attack the our leg, we move left side with lifting right thigh up and try to defend their attack.
In this case, the opponent can not notice it so their attack can be defended.

Arakawa Ganryu Daihan (荒川 岸柳 代範)