Adult PC Game: Mononoke Quest Ver. 1.3 by Free Time of X Archive

Sakaragi Junichi is an ordinary man who, for some unknown reason, finds himself in a mansion,
inhabited by pretty girls from the netherworld.
But appearances are deceptive - if you lose, you will become their slave.
The decision is yours - to become a toy in the hands of kawaii ghosts or gain your freedom.