Binetsukko b37C: vol.2
Mutsumi Kagidou finds herself being blackmailed by a perverted student, Inuhiko. The blackmail material? An embarrassing photo of her. In order to get the photo back, she becomes Inuhiko's sex toy and they have all kinds of debauched sex. After a while though, Mustumi tells Inuhiko to forget about the photo since she doesn't mind being his sex toy anymore. And so, a 'unique' relationship is formed between the two of them.