Rena is a former model who is now a full-time housewife. One day, Yoshino, who lives next door, suddenly begs her to be a monitor and model for his new underwear. Rena, who is weak to pressure, gives in to Yoshino's expression and agrees, saying it will be just once. On the day of the shoot, Rena remembers the indescribable pleasure she felt being photographed in her underwear. It was supposed to be a one-time request, but she accepts the offer to be a model again, saying she will do it again next time. From then on, she begins to shoot alone with Yoshino, and it doesn't take long for the excited two to cross the line...