the breaktrough could be so:

hiramekarei liberation +1: hits the whole field

ninja sword +1: add bloodthristy demon

water style - water wall +1: highfloat to repulse and paralysis

power of water +1: atk/nin increased by 9% per water ninja

power of water +2: atk/nin increased by 9% per water ninja and increases his critical rate by 6% every time it uses a water effect (chase or mystery)