In the near future, in 2020, the government took seriously the fact that Japan's population had fallen to 50 million due to the declining birthrate, and asked a genius scientist to come up with a solution. - The doctor uses the latest technology to develop a machine called the Sex Time Machine, and the doctor's assistant becomes a test subject to return to the past. - When you enter the date into a machine that looks like a mobile phone, you suddenly slip back in time, and before you know it, you'll find yourself in your old ex-girlfriend's room. - The man who asked me for a vaginal cum shot refused to say that it was a dangerous day, so I just gave him a blowjob and came back. - While being scolded by the doctor, "What are you doing?" - When she arrived, her ex-girlfriend was out and her little sister RICA was at home. - When a man is talking with her sister RICA, he suddenly confesses his love! - RICA-chan, while gently caressing the dick, the pussy turns around her waist and requests her face sitting. - This time I'm going to throw a fat one into RICA-chan, who's ascending by turning her waist so much that a man's nose can be broken! - As soon as I put a stiff dick that popped out of my blood vessels, I put it in deep inside and it's a thick vaginal cum shot! - (Delivery provided by Dream Room: M Disciple)