You know you can just accept a character is a bad person and still like them right? It’s not even really about the in//cest as much as it is about the serial killing, warped sense of morality and inability to truly love anyone. If you take away those aspects of korekiyo then why do you bother liking him? You’re only liking your idealized version of him. It’s like liking Junko but without the despair.