How cute of Shamiko getting excited about all 4 girls being in battle outfits, and I imagine in a good part about being part of that group.
I also noticed it was odd of Ogura to have her glasses there, but still did not think for a second it was a fake (even with all the talk of fakes XD)
Ugallu's bad end is the one thing Shamiko will erase at all costs. Mikan planting a mikan tree there might be, on the other hand, an unavoidable future.
@Blackwar
Look closer, the strings are there in some panels. Anyway, what Mikan and Ugallu are hearing clearly points to this Ogura being the odd (wo)man out.
BTW, I don't think fake Ogura is lying about how to get out... but likely, as classic plot, wishes to replace the real one (ninja'd of course)... now, where could the real one be? she should still be in somewhere in that world.