Interesting although there are some flaws and plotholes. The villains are your usual 2 dimensional characters. There hasn't been much character development even the mc nor the characters but I guess that's because they are demon maids and not part of his harem except I was expecting some character development mainly from the dragon and the vampire servant. The mc is more like a edgy teenager than a psychopath or sociopath who was given power and do what he wants while being portrayed as being capable but he is actually not ( I honestly do not know why if the author is actually trying to portray him as a psychopath as in one chapter he is thinking about killing his maid as he can't trust her but he didn't as he is actually using his dick to think instead. I honestly expecting some sort of actual punishment). The story is still good combined to that. This is like your ordinary isekai but instead flipped around with a few minor tweaks. I highly suggest the author to read the using dungeon defense as a reference for character design and kidnapped dragons as for character development. This novel has a lot of potential.