Mika's just calmly playing the Kantele (way I remember, the koto should be narrower and its tone should be that small sharp note rather than the long reverb of a zither like instrument), Darjeeling with her adages and Erika is so out of place or does not understand.

Why not?

Thank you for the reference, I confuse the instrument with the Koto

Actually Mika is quite adapt at the proverbs as well...

It's probably a non-stop back-and-forth session of aphorisms and Erika can't get in a word in otherwise.

Erika could have just take all the meat while they're talking
If they would just stop that "the truest way to roast meat" topic

Tea and yakiniku, Darjeeling, I... I don't even...