Responses
Yes, most of the female characters seem very one dimensional, even Nanao. If you take away her trauma and affection/gratitude for the ml she really doesn’t have a personality. They’re all Saints (pure souls who can do no wrong like Nanao) , Snakes (hateful opportunists who abuse others like Akemi), or Sheep (most of the other women who just go with the flow of more powerful people). They really don’t have individual goals or personalities beyond that.
I do enjoy the premise, but it's gonna get tiring if they keep bringing annoying and dumb side characters/villains. I'd rather focus on the action aspect of the story, with the ayakashi breaking the barrier as the romance takes off