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.
I don't need your gratitude. 
Just make sure to pay me.
لستُ بحاجة لامتنانك. احرص على أن تسدّد
لي فحسب
Ich brauche keinen Dank, sondern Geld.
Agradécemelo pagándome.
Agradécemelo pagándome.
Je veux pas des paroles,
mais des actes.
Non me ne faccio nulla dei ringraziamenti,
pensa piuttosto a pagarmi.
Não quero agradecimento com
palavras, mas sim com dinheiro.
Благодари не на словах,
а деньгами.