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?
At first, I thought they were just 
coming up with theories for fun, but...
...كنت أظنّ أنّهم يختلقون هذه النظريات للمتعة فقط، لكن
Anfangs kamen einfach nur
spaßige Theorien, aber das jetzt …
Primero pensé que hacía teorías
por diversión, pero…
Pensaba que sus teorías
eran por la gracia, pero…
La fille d’acier est une invention ?
No começo achei que estivesse inventando
teorias para se divertir, mas...
Мне сначала казалось, что он просто
набрасывает теорий…