Adventure of three slaves

You have money, but no plans for your life. You live in your big mansion, but life is boring. One day, while wandering through the markets, you find something you could say is a good deal - three slaves for a rather low price. They were an angel woman, an elf woman, and a demon woman. You bought them and originally used them as household help, but eventually they opened up for you and realized you aren't monster like their previous owners. When you got to know each other, all of you decided to form a rather peculiar adventuring party and go to see the world together.