I think it would be really funny if the mother and daughter were actually "normal" and non-malicious or scheming, but just really weird instead so all this awful stuff stuff we are seeing as readers is just paranoia and we'd all look silly by the end of everything.
Used items? You DID NOT beat the game. Exploits? DID NOT beat the game. Knew boss information beforehand? You DID NOT beat the game. Had help fighting the boss, NPC or not? You DID NOT beat the game.
Can't wait for the girl from chapter 1 that told the MC he was being used to show up and become "the rival". Not because I like those sort of mixups, but because I'm conditioned to expect it.
Interesting premise I guess. Hope to see more, but I feel like the addition of other characters down the line is going to be something that would make the relationships "spicier" rather than actually advancing anything.