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.
Complete Monster: A few characters seem to qualify, but the unpopular king in Yamato stands out. Aware of how much his subjects despise him, he orders a hundred people to be sacrificed upon his death just to ensure that people will mourn his death.
Nightmare Fuel: Some parts can be really creepy, such as in Resurrection, which traumatized this troper for days.
Seasonal Rot: Even Jared Cook and Frederick Schodt, who translated the manga in its entirety and fought for it to get published in English for 30 years, admit that the series really isn't worth reading after Resurrection.