He didn't check if they are 100% dead ._.
well, they have been cut in half...
but then again anything is possible in a manga...
Actually, i've seen lots. Don't assume based on my opinion. I'm just saying that I think it's highly unlikely they'll be coming back.
My main problem with this is more like they we're able to talk so much before "dying" and flashy flash just walked off and never tried to cut them into pieces or smth
He didn't check if they are 100% dead ._.