Kotoko came up with three solutions, but they all got shot down. Kuro keeps trying to grasp the future where they can defeat Steel Lady Nanase, but Rikka made it disappear once again. But Kotoko wasn’t done yet. Steel Lady Nanase is not a ghost. What is Kotoko’s 4th solution that may finally put an end to Steel Lady Nanase’s existence once and for all?
The one behind all this is 
none other than Nanase Karin,
،لا أحد وراء هذا غير ناناسي كارين
Hinter all dem steckt niemand Geringeres
als Nanase Karin, Nanase Haruko, selbst.
La responsable de esto es Karin Nanase,
La responsable de esto es Karin Nanase,
Le coupable n’est autre
que Karin Nanase,
E l'assassino non è altri che
Quem está por trás de tudo não é
ninguém menos que Karin Nanase.
Преступник не кто иной,
как сама Карин Нанасэ!