This MC is genuinely a psychopath. So the first thing you want to do is buy a slave... and force her to sleep with you? Are we serious? After being so chill with another person being forced into a life of slavery for something so small? This is why I hate these isekai which not only glorify...
Oh no he referenced the code name of the old Japanese experiments during World War 2. Why do people even care? It's being used for the name of a villain who indeed does Human experiments. If anything this brings more awareness to a part of history which I previously didn't even know about.