The groups he posted to are all groups which normally posts chapters for other languages, thus blocking these scanlation groups probably won't help, since this guy isn't even in 1 group, he posted under around 5 groups already.
I don't know, I get the feeling she didn't try very hard to explain about blood. There's the stupidly simple solution of bringing in 3 cups of water, adding salt into one, adding sand into another, and asking them whether the water inside could still flow.
With a bit of effort, the cup of...