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.
So there are seven mysteries 
in our conversation,
،هنالك سبعة ألغاز في محادثتنا إذا
Wenn in der Unterhaltung
die sieben Mysterien vorkommen,
Si mencionan una de las maravillas,
Si mencionan una de las maravillas,
En gros, je dois trouver la réponse
Quindi ci sono sette misteri
nella nostra conversazione,
Portanto, há sete mistérios
em nossa conversa,
В нашей беседе семь загадок,