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.
It is a horribly twisted 
manifestation of our wish
إنّها تجلٍّ ملتوٍ مروّع لأمنيتنا
Er wird den Wunsch,
dass niemand Hunger leiden möge,
El deseo de evitar el hambre se
manifestará de la peor forma posible".
El deseo de evitar el hambre se
manifestará de la peor forma posible".
Elle est une manifestation tordue
de notre souhait
Esso è la manifestazione più perversa del desiderio
É uma forma horrível e distorcida de nosso
«Иначе надежда истребить губительный голод
воплотится в самой кошмарной форме».