Warriors Killing Intent only works on 3 sword nin so it's not being applied to one of them.

Besides that you don't have a tank or a healer or life steal. So you will probably lose to every team like you said you were.

If you really want to go with the whole sword strategy, remove one swordsmen and sub them for a Tank, Healer, or Guy depending on what you want to do. You can even move your main to the front if your Initiative is high enough so he can turn 2 chidori to paralyze their team so they cant combo your squishy swordsmen.