The three Invaders return to their home prefecture of Hokkaido for a required summer school day. On the bus ride to school, Mone starts talking about Hokkaido's seven folk legends while Chihori shares random facts about space. As Yuina responds to the girls' wacky conversation with her usual comical comebacks, she is overcome with a very strange feeling about the situation.
A black mask and "shu-koh, shu-koh" 
reminds you of something?
القناع الأسود و"شوكو شوكو" يذكّرانك بشيءٍ ما؟
Was kann einem bei so was einfallen?
¿Eso te recuerda algo?
¿Eso te recuerda algo?
Alors là, je vois vraiment pas
ce que ça pourrait t’évoquer.
La maschera nera e lo "shuko shuko" 
ti ricordano qualcosa?
Uma máscara preta e "shu-koh
shu-koh" te lembra alguma coisa?
Что они могли тебе напомнить?