I would go for something fun like this with your ninjas, a lot of utility and control with solid damage as well.

Idea behind it is: control your enemy with kurenai -> use fire main mystery to control enemy main and get chakra from bani chakra -> use mei mystery to apply barrier and remove enemy shield/buffs. Kotetsu pos1 for high damage chases and overall solid damage. Every standard hits multiple people, have potential to proc those 20 and 30 hit chases for even more area damage + kotetsu's very high single target chase damage to finish off priority targets. This team should be pretty legit from your ninja pool.