I would hope that most of us understand of the concept of a monster girl. Usually a lonely race of feminine humanoid creatures, that are lonely due to their entire species consisting of females. They look for a human male to love and be loved by.
In most depictions they feed off his energy in the form of semen, but what if it wasn't a individual feeding, but an environment?
Think of a pervy Silent hill… so just Silent hill, but instead of punishing you for your sins in the form of grotesque abominations made from your own mind, it traps you, and absorbs your energy via monster girls it makes from your psyche.
So, does this count as monster girls? There are monster girls, but it more of the environment with the intention, while the monster girls are just tools.
Now does anyone have a word for that?
The closet thing I have been able to find was a the doujinshi "END OF LOCATION" and it doesn't really get at what I am after.