"Pure Pure Pero Pero Princess" is an adult anime OVA adapted from Dwarfsoft's visual novel, following 42-year-old bachelor Toshio who is asked by Iris—a mysterious woman claiming to be a princess from another world—to teach her how to please men. Toshio provides Iris with thorough “sex education” despite her complete lack of sexual knowledge, but when Iris’s true identity as a royal princess is revealed, her mother Queen Cattleya also appears and becomes equally corrupted by pleasure.