A Breast-Folk is a human-like creature with nothing different from a normal human female but having an extra pair of breasts being underneath the normal pair and above her navel. Breast-Folks are extremely good at lactating with their four breasts, and their milk can bring humans mind-breaking pleasure, making humans addicted to their milk and willing to do anything for them to get more milk from them. Making full use of their ability, Breast-Folks are born with a dominant nature, constantly seeking for and seducting human male into having sex, offering their milk to them so that they can take control of males (of course, they think that it's a fair trade since men get the pleasure from their milk). After that, Breast-Folks may rape the men or control them to commit crimes such as robbery (for living) and raping (to make fun of them).