CEMD-277 Mei Uesaka trained into a sex slave, bound and toyed, passed to strangers

Mei Uesaka has been repeatedly trained by a perverted man until she becomes a sex slave who gets wet just from hearing a man's voice, and when hemp rope is tied tightly to her soft skin, she writhes with an ahegao face from the pleasure. The man mercilessly torments her sensitized body with an obscene toy, and eventually the trained woman is handed over to other perverted men, who use her countless times.