These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Those who are turned into shadows slowly have their will broken it and become the opposite of their initial personality. In addition, they're pretty much trapped in the e-test until someone saves them.
Aru's cotton guts getting caught between the giant gears and splayed all over the place is about as graphic as you can get without having actual blood.