It is a remake of Satō's 1987 film, Genuine Rape (暴行本番, Boko honban), and, according to AllMovie, "contains one of the most appalling scenes in Japanese horror.

The first woman, who regularly indulges in gluttony, wishes to have the best food in the world, but she ends up cooking and consuming various parts of her body, notably, her labia.

However, noticing hairs and pores all over her body, she tries to mutilate herself, piercing her skin all over with needles and jewellery before Rika intervenes.

Rika does not seem to be influenced by MySon, but Eiji finds out that it has turned her into a homicidal murderer who gets enjoyment from witnessing the pain and suffering of her victims,[2] and that she killed the other two girls and his mother.

[3] In the final scene, set several years later, Rika and her young son, also named Eiji, have apparently perfected MySon, and depart on a motorcycle to administer a vaporised version of the drug to the population of a city.