Same goes for me as I can finally beat the 2 stages that drops that team buff accessory. However, my first time encounter in the takenaka hanbei stage was quite surprising because it's a 9 unit army with.
By the way, I was able to view the skills of the 2 summon generals. It seems that SSR Date Nami should be named Date Nagohime instead. First, they look like exactly the same (SSR Date Nami and R Date Nagohime). Second they have skills
that rolls a dice, and skills that enhances the dice roll effect. Might be a general's name input confusion of some sort.