After learning about the “Seven Mysteries” at the Ninja Academy, Himawari and several of her classmates decide to go investigate at night. Kae is among the participants, so Kawaki has no choice but to go along. But he learns that Kae does not believe in the Seven Wonders and is trying to create a fake phenomenon for the students who are looking forward to the expedition. Seeing Kae’s eagerness and excitement, Kawaki decides to help her until the end, but then something mysterious and unexpected occurs.
I can't let this go on
without knowing who they are!
!لا أستطيع أن أدع المسألة تمر دون أن أعرف من يكون
Ich will mir aber Klarheit verschaffen!
¡Hay que descubrir quién es!
¡Hay que descubrir quién es!
Dobbiamo scoprire chi è, 
non possiamo lasciarlo andare!
Não posso deixá-lo fugir
sem saber quem é!
Не могу я его отпустить,
 не узнав, кто это!