What was originally a very simple story has inexplicably become a massive and lengthy mess. It was supposed to be a tale of a few girls and a mysterious man in a gloomy manor, but it's turned into a bizarre revenge story by a mad scientist. The initial concept involved various modifications and acts of humiliation targeting each girl's unique characteristics, but in the end, only Mizushima Hiiro was truly brought to fruition . This is probably the best that can be left for this story.