Welp, there's no need to actually kill her, just teach her the ways of HikiNEETs. As long as she's not a bother to you, Demon King, why should you care?
@nachtness Chapters 1 & 2 showed that she is completely resistant to those deaths, and would probably unlock the Iron Maiden from the inside, walk across the bottom of the ocean floor back to shore, and then back to the Demon King's castle for his next attempt.
@Ncararc IMO that would work IF THE HEROINE ISN'T SO EAGER TO DIE. part of being a hikkiNEET is actually maintaining the bare minimum will to live for your hobbies...the heroine is pretty much running at the negatives in that aspect
I'm still pretty curious about the god that isekai'd her. We're they just a well intentioned airhead, or is this some sort of key to whatever long term plans they had for this world? My gut says airhead.