The basis of the story of Alraune dates to the Middles Ages in Germany. The humanoid-shaped Mandrake root or Mandragora officinarum was widely believed to be produced by the semen of hanged men under the gallows. Alchemists claimed that hanged men ejaculated after their necks were broken and that the earth absorbed their final "strengths". In some versions, it is blood instead of semen. The root itself was used in love philtres and potions while its fruit was supposed to facilitate pregnancy. Witches who "made love" to the Mandrake root were said to produce offspring which had no feelings of real love and had no soul.
"Mmm, the blood from humans like these is so scrumptious. It has this thick texture that lingers on the tongue."
Alraune creates a Domain in Naraku and has taken Navarre and a master Samurai captive in order to feed on them. She loves the taste of the selfish Navarre who tries to harm his fellow Samurai, but calls for their aid when in trouble. She refuses to give him over and a fight starts. Deciding to diet tomorrow, she wants to enjoy all that delicious blood today. Her captives are freed once she is defeated.