I bet Rakuro is going to end up having both kinds of alien water blend inside him, and in the end he'll resurrect and become Alien Water Jesus who absolves the fish of their sins, since the fish aren't malicious, they just don't understand emotions.
"Oh, Seiichi finally got angry enough he can attack post-humans, but he can't bring himself to drill them so he's just kicking them-" kicks the guy's damn head off
"... god damn, okay."
Also, wtf is Makoto doing, can she not like pull back one strand of hair to pluck out and use to heal Rokurou?