It's just the first chapter, but this girl could've just as easily been a regular NEET and no difference would be made. The relevance of her being a ninja should probably be showed beyond a backstory, otherwise it feels like an afterthought.
@xXPenisXx it is in this scenario. Being an housewife, she’s supposed to do at least the chores; instead, she’s only playing games. So it’s ok to consider her NEET.