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 only pretended to become his slave again
 so I could kill him with my own hands.
تظاهرتُ بأنّني أمَته مجدّداً وذلك كي أتمكّن
من قتله بيديّ هاتين
Ich tu nur so, als ob ich das wollte,
damit ich ihn irgendwann umbringen kann.
Fingí servirte de nuevo
para matarte yo misma.
Fingí servirte de nuevo
para matarte yo misma.
J’ai fait semblant de redevenir ta chose
pour te tuer de mes propres mains.
Ho finto di voler tornare a esserlo
solo per poterlo uccidere con le mie stesse mani.
Eu só fingi ser escrava dele para
matá-lo com minhas próprias mãos.
Я и притворяться-то решила,
чтобы своими руками его убить…