Another option that works, somehow, with your ninjas is:

X kurenai water main

X x x

Yagura x sakura cloak

Talents: 22323, summon: monkey king (i take for granted you don't own koh), summon mystery: ninja dog, pakkun or monkey king too.

Strategy: shark bomb steals chakra and spreads chaos and starts a combo that apply chaos twice + acupuncture and you have it ready to use every round. If needed you heal with sakura or you shield with kurenai. With yagura you copy the best buff or barrier ninja the enemy owns (remember that root of warrior shields azure fang because she is swordbearer and also clears her eventual debuffs, flower guard do it too even if will be random which girls will be shielded, etc...)