A man kidnapped a schoolgirl and held her captive in his house. Her name is "Koharu". He puts her to sleep with drugs and does whatever he wants to her while she is defenseless. He sniffs her, gropes her crotch, and does whatever he wants to her. When Koharu wakes up, she is shocked and panics at the sight of a strange man in front of her. She tries to run away, but the man strangles her and she gives up on resisting. She cries in fear and becomes the victim of the man's desires. And then... she is trained as the man's pet. The man records this on video and uploads it. After a life of cruel training that continues every day, Koharu gradually realizes the pleasure of sex and overcomes her fear. Eventually, she begins to desire the man herself... Kidnapped and restrained, deep throated, slapped, forced creampie... After the man's training, Koharu's body gradually becomes one that desires only pleasure...