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?
My solutions thus far have included 
the previous ones to some extent.
.حلولي حتّى الآن تتضمن الحلول السابقة لدرجة ما
Meine Lösungen basierten zu einem
gewissen Teil auf den vorherigen.
Mis soluciones hasta ahora incluían
las anteriores hasta cierto punto.
Mis soluciones hasta ahora incluían
las anteriores hasta cierto punto.
Petit à petit, mes solutions
Le soluzioni che ho presentato finora
Minhas soluções até agora incluíram
as anteriores até certo ponto.
Все мои объяснения понемногу,
но включали предыдущие варианты.