ダークエルフ（剣士）

An elf who has fallen to corruption is normally referred to as a Dark Elf. Giving into the darkness and degeneration of mind and spirit, their bodies turn black. Though able to live as herbivores, Dark Elves prefer to have intercourse with humans and feed on semen. With magical power flowing through their sexual organs, they will violate men and corrupt them. As soon as the male ejaculates inside of them, they will fall into darkness. Once that happens, the male forgets about everything but pleasure. Like that, they will single-mindedly have sex with the Dark Elf until they waste away. Once the Dark Elf is corrupted, they lose their reproductive ability. Their only purpose in attacking men is to sate their appetite lust. [From In-game Monsterpedia]