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.
It's more efficient to have
my insects do the cleaning.
.من الأبرع أن تقوم حشراتي بالتنظيف
Es ist effizienter, wenn meine
Insekten das Putzen übernehmen.
Los insectos son más eficientes
a la hora de limpiar.
Los insectos son más eficientes
a la hora de limpiar.
Ho pensato che sarebbe stato più efficiente 
far fare le pulizie ai miei insetti.
Meus insetos me ajudam a limpar.
С насекомыми в помощниках
убираться гораздо быстрее.