Ah, I was reading along, thinking "Wow, the art has gotten so much better!" but that's suddenly the end of the manga. Which really sucks, I was enjoying the story and looking forward to seeing all the games' characters in order again.
Guess it'll just be an unsolved mystery. Mima can't come...
@VIVIT
When was Okina ever related to Kanako in any way? She also hasn't shown any work in maintaining the barrier. That's really more a Yukari and Reimu thing.
I'm always a little torn between this kind of serious, dangerous Gensokyo, and the cute, fun, familial feeling of most doujins.
But this one was good without being too over the top.
Ah, it's just a fun story about cute kids having fun over summer, and a somewhat sadder story about Marisa's childhood, but not really, since she's still able to run around and have fun now.