Yuichi is a popular guy who has never had a girlfriend. However, now that he is about to get a girlfriend for the first time, he calls his aunt Keiko for advice on men and women. "What if I don't get an erection during sex?" Keiko can't bear to see Yuichi like that and stands up. She comes to Yuichi in her underwear, opens the front door and shows him her amazing technique on his dick! She then inserts his dick without asking for permission! From that moment until Keiko leaves, Yuichi continues to enjoy her amazing technique over and over again...