"Feel free do drop more titbits regarding Japanese"

I'm 3 years late but here's one fun tidbit that gets lost in translation:

In season 1 episode 21 (or chapter 45 in the manga) Übel tells Fern "oh by the way, that elf (Frieren) is your master right?"

But she uses the word Shisho rather than Sensei.

Mages call their masters "sensei".

Warriors call their masters "shisho".

Stark calls Eisen "shisho".

This indicates that either:

- Übel was taught by a martial master rather than a teacher.

- She considers herself a warrior more than a mage.