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.
YMMV: The Circle Series
Evil Is Sexy: Janae. And apparently Marsuuv in some twisted way.
Nightmare Fuel : Every scene with Teeleh and the Shataiki. Not to mention the description of what the Raison Strain virus does to the body. (Hint: It's very painful and not pretty). And in Green the villains are even Darker and Edgier than in the previous three books, taking part in human sacrifice and vampirism, just to name a few of their hobbies.