Maoyuu Maou Yuusha - "Kono Watashi no Mono Tonare, Yuusha yo" "Kotowaru!" - Vol. 12 Ch. 38 - Guns...They're Muskets

[MangaDex]

 

[JuneII]

Younger and elder sister maids' descriptions are mistaken.

 

[Grimmycoffee]

In page 38, isn't it supposed to be "I don't understand"? I don't know the original JP text, but I feel like that fits the situation better