I have some doubts about what happened in Cross Channel.
1)-First, why couldn't Taichi return back to the world in the same way as others?
2)- What's with Nanaka? How is she in the same world as Taichi, or is she a hallucination or something?
3)- Does anyone remember if there was someone with a pretty low adaptation coeffecient in Gunjou. I think it was in the prologue. It is mentioned in Riki's mini route that the cutoff is 40, but there was someone in gunjou wth a lower adaptation coefficient as well. (i don;t exactly remember this part)