The mysterious girl that showed up out of nowhere was actually Filo. She's a filolial queen with an advanced transformation ability, and she can even take human form thanks to it. However, her clothes get ripped every time she transforms, meaning Naofumi has to get her some magic clothes if he doesn't want to go broke. The party leaves on a new adventure to gather the materials required.
but not right now. My magic 
gemstone broke recently.
لكن حجري الكريم السّحري قد انكسر مؤخّراً
aber der benötigte magische Stein ist kaputt.
Also klappt das derzeit nicht.
Recién se me rompió
la piedra mágica de la rueca.
Se me acaba de romper
la piedra mágica de la rueca.
mais la pierre précieuse
est abîmée, donc ce n’est pas possible…
Purtroppo, però, al momento non è possibile,
perché la mia pietra magica si è rotta.
mas não agora que minha
gema mágica quebrou.
но колдовской камушек сломался
и пока не получится.