The fourth in the sensual novel series is Ai Asakura, who plays the sensual novelist Tokiwa quasi-original [sister's shorts]! My cousin Misaki (Ai Asakura), who became a female college student from this spring, will stay at Shinji's house during the Ronin. Shinji can't hide his excitement with his preeminent body in front of him. Eventually I even masturbate using Misaki's shorts that were in the washroom ... This work is Ai Asakura's de S character explosion! Please look forward to the erotic drama of immorality!