I hope they reveal someday what they really saw in that lake and what was going on with Kon's nightmare, the only thing we know is that Kon used part of Chiya's powers because they said "four red eyes".
^But yeah, this manga should be more popular, not only because of the mystery surrounding the plot and Chiya, but because of how gay it is, this moment right here is what made me fall in love with this couple in the anime, it's even better in the manga because of Chiya's body being outside any panels, as if she's showing to the gods in the town that she has no restrictions surrounding her, that nothing can stop her to be together with Kon forever, to have Kon rely on her forever. The whole thing is just beautiful. It just needs the soundtrack: https://www.youtube.com/watch?v=hbduj9MbE_o
Yes, now it's perfect.