It does make more sense to do norito with the Sekireis who are interested in fighting.
Benitsubasa and Haihane feel that Karasuba is out of the game, but they continue to fight Higa's Sekirei. Mikogami and Sanada's Sekireis (the crazy 3) also get into it, and all the parties use Norito to power up. In the control center of the island, Minaka realizes that all the Sekireis going norito is causing the system to overload, and which may cause Kamikura Island to sink into the sea.
It's been so long since I've read Sekirei that I had to read my own summaries to remember what was going on. Anyways, it seems the invaders have been taken care of, and the Sekireis are busy fighting it out and going down the path of the Sekirei Plan. As for overloading the island, I guess there will always be one problem after another at this stage of the story. Curious that we saw nothing of Minato's team this chapter. The only other thing worthy of mentioning was that Sanada's reluctance to kiss his crazy 3 Sekirei was funny, since they have a habit of biting. Sanada likes his Cute 3, but the Crazy 3 are the ones who do the fighting.