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: When They Cry
Adaptation Displacement: Most fans of Higurashi and Umineko tend to be more familiar with their respective anime adaptations than the visual novels they're based on.
Hilarious in Hindsight: Ryukishi was inspired by Key, replacing drama with horror in his version of the formula. Years after Higurashi and Umineko became successes, Ryukishi actually wrote for a Key VN, Rewrite. What followed was a Darker and Edgier Key story with a much stronger split between the "happy school life" and "mystery of the world" sections.
Nightmare Fuel - Just from the basic premise, having to relive the last days before your murder over and over again, while watching everyone you care about being murdered too. And one of those people you care about's the murderer.