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Usaken explosion stamp is good for Mori but god tier for FBK. Each enemy hit by the explosion rolls for the FBK swords, so it is like having your Special going the entire stage.
As I expected, the Breastplate is great for her too. You'd think the 20% speed penalty would be rough but she can get plenty more to make up for it and, since it is triggered by being attacked and dodged attacks are still attacks, it more than doubles your damage when you FriendZone+KonKon charge.