Ryouhei is in love with Miyako, who is his old friend and the student council president. One day, when he walks around the school, he is attacked by two girls. They are an angel and a devil who have come to this world to collect the "soul of a sex god" inside his body. The way of collecting it is to have sex! "Get ready!" "Take off your clothes!" Like this, he finally has sex with them... Also, they start living at his place so that they can have sex anytime. They have sex anytime, anywhere... Also involving Miyako, his sex life starts now...