Maybe it's a supernatural story where she's somehow got memories of someone else's life.
I just kind of assumed it was a reincarnation thing, yeah. The mention of the apartment being a bit old-fashioned and the presence of the old CRT TV, compared to the modern flatscreen in the narrator's apartment, makes me think Kuniko and Mihoko's story might have happened a few decades ago.
Yeah, I agree with you. How else could you explain the random technology close-ups? Plus, you can see the rotary dial phone on page 4 along with the old TV. I mean, this should be some kind of a hint ...
The close-ups could just be there to show you how much time has passed.
she also says "why does your face seem so nostalgic to me?" could be amnesia
Chapter 7 was really cute, perhaps I could grow to like the series more. The CuteGangsta's style seem really jumbled a lot of times, even for moe4koma, but it's fun so far for the spectacle of the series trying so hard to be ridiculously cute and sweet.