Kukuri the Delviroot

Kukuri is a half-vampire, half-succubus sealed into a book in Taisuke's father's library. Taisuke accidentally frees her when he cuts himself on the book which gives her blood necessary to awaken. Because she's a half vampire she drinks blood however her half succubus side makes her desire something far more lustful. She won't go back to sleep unless she gets a large amount of Taisuke's semen to drink.