That's one hell of a curve ball. Why would Himuro (window opener) straight up lie about MC being the mastermind, even AFTER getting his toes cut off.
My two theories: Anzai (big guy) is a psychopath that wants to finally exercise his violence.
Or, Himuro honestly believes MC is behind all of...
It's hard to not sympathize with his actions when the threat of death looms overhead. It's obviously wrong in hindsight, but put in the same situation, I don't know if I can say I'd stop him.
Okay, so I'm assuming the birds were the first things to be affected by the Moon stone radius because they're closer to the sky, but wouldn't people in airplanes come crashing from the sky?
Is the monkey actually weak? It looks smaller than a gorilla, but larger than the average male. In a straight battle it might be able to kill both of them easily, but maybe it's trying to avoid any injuries to make sure there aren't complications killing the rest of them? Maybe he's intimidated...