This is very disappointing. The plot was getting somewhere with the alien girl who looks like Fuyu — like, maybe Aki was summoned to retrieve the child of that alien species because she ended up in the Edo period by mistake.
Anyways, it’s been a decade or more, so there’s no reason to cry about it. I think it had some potential, even with all the 00s lame ass creepy jokes, it was a fun read with an interesting plot.
Wish the author had retconned it removing certain storylines or whatever, since the concept seems really good. It has a back to the future vibe, with the message telling the girls to meet her at a specific date.