The Three Charms R - The Twelve Monster Girls of Mahoroba

For some reason, the protagonist has got to live in the "Youkai Mountain". - Which means he is always targeted by monster girls that suck man's lifeforce... - Tentacles, slimy fluid, art of brainwashing... - The monster girls seductions that incorporate magic - will gradually grind down the protagonist's will... - Sometimes their acts of cumsuckery come with verbal abuses... - And at other times he is courted and generously forced into "male-female relationship"...​