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: Phantom of Inferno
Complete Monster - Scythe Master, in the first 10 minutes it is established that he used a combination of drugs and hypnoses to erase the main character's memories, why? Because saw his potential as an assassin wanted to test a new theory. He then leaves the main character to train for months in the Mojave desert with no contact from the outside world. If this wasn't bad enough this was the second experiment. The First person he experimented on he rapes, brainwashes, trains as a serial killer and treats like property, oh and the girl was 12 when he started this. A third person he experiments on he doesn't drug or rape, but he does lie to her about events, encourages her growing hatred and turns her full Yandere just to mess with the main character. Oh and while he is doing this with her, he is repeating his first experiment, 6 times over, just in case.