Mei Uesaka has been repeatedly trained by a perverted man, and has been turned into a sex slave whose pussy gets soaking wet just from hearing a man's voice. When hemp rope is tightly tied around her soft skin, she writhes in pleasure, making a face like an ecstasy. The man mercilessly attacks her body, which has become so sensitive, with obscene toys. Eventually, her fully trained body is handed over to the next group of perverted men, and she cums countless times while being toyed with by strangers' dicks.