Even putting aside that Tsutako faces few repercussions for her actions apart from a slap from Azami's mother and the disappointment of her friend, the sub-plot of the doppelganger who hit Azami with the car just vanished in the middle of the story. There was so much buildup to who hit Azami, this guy who's essentially Evil Azami threatening her, her threatening Evil Azami back, then ... nothing.
It led for a pretty unsatisfying ending.



