In previous chapter i talk really long how it was obvious that demon king isn't Kumoko and that statement don't need a spoiler tag. But that chapter really made me think otherwise.
Looks like mangaka for some reason really want us to believe that it's Kumoko with that "Nai wa"... I thought that demon king in WN rarely used that... need to see original version, because in translation there wasn't such thing... but i can't belive that translator scrapped "naiwa", it was always left untouched for obvious reason