One day, a package was delivered to Kobayashi's house. Inside was an adult toy he had no memory of ordering. Upon checking the recipient's name, it turned out to be Rina, the wife of his neighbors who are friends. Kobayashi, who had never looked at Rina with lustful eyes, began to have wild fantasies. Kobayashi visits the Ayana household. Unaware of what is about to happen, Rina welcomes the ravenous beast with her usual smile…
