Sano Hazuki plays an innocent girl with an immature B-cup body. Awaiting her is a special development technique known as "horn masturbation" and a harsh "raising" by her master. Following the manual, step by step, her rationality is eroded, and she is transformed into a vessel that only accepts semen. Her small body is toyed with by a huge cock, and her eyes show a mixture of shock and ecstasy as she is creampied. This is a documentary of an immoral upbringing, depicting how the girl's innocence is overwritten by impurity, and how she becomes a tamed female who craves creampies.