
I think Ren... has some sort of crush on Ayana...? The flashback of Ayana caring for Ren in the nurse office is probably just a small insight, but... RAPING THE GIRL YOU LIKE ISN'T HOW YOU APPROACH HER.
But then again, if Ren really liked her, he wouldn't let his other friend rape her too.... I WANT ANSWERS DAMN IT.

My thoughts exactly. And I HATE that they are now trying to play him off as some GOOD GUY, and trying to make us feel sorry and to support him! But what I hate even MORE, is that in some perverse way (in MY case at least), IT IS WORKING!!!!! ARGH!!!!
Guess that is just a testament to the mangaka's skill in storytelling. Excuse me while I add ANOTHER EFFING STAR to this!!!!
*grumble gripe* "i still hate Ren though...."

I was thinking that all the kids would get infected as they grow older... since the anti-virus protein or whatever they produce at peak during their childhood-teen years...
But this could also be technically right, as the virus could've died out in the time it took for them to grow out, as viruses mostly cannot survive at hours without a host, and without available hosts it's quite possible the virus just died out before it could infect them during their adulthood.
But who the fuck am I to question the logic to manga? ╮( ̄▽ ̄)╭
The pig one totally reminded me of that one scene in Hannibal Lecter, with the human flesh eating pigs!