Rika is attacked by a strange man and ends up experiencing physical humiliation. - He is driven to the point of personality collapse by unreasonable violence, and is reduced to a tool to dispose of his sexual desires... - The dicks that come one after another are mercilessly inserted into her mouth and pussy! - Training to become a lewd pussy that can't live without a cock! - ! - She transforms into a slut who cums violently when the inside of her vagina is penetrated with a raw dick! - !