'Corondo Private Girls' Academy - a prestigious, world-famous academy for refined young ladies. Yet despite the national law making sexual intercourse mandatory, their sex education remains woefully inadequate.Enter Kobayashi, the newly assigned Sex Guidance Instructor. His mission: to teach these sheltered girls the proper knowledge and skills of sex. Claiming it's all part of his "instruction," he begins to hungrily devour the pure, untouched students one by one...