Koji and Hifuka are childhood friends who live next door to each other. Their relationship, where they come home as if it were their own and naturally eat dinner together, is neither boyfriend nor girlfriend but a somewhat ambiguous relationship. However, that distance suddenly shrinks. Not only does it shrink, but it also deepens into that of a master and a female dog! How did this happen!? The play in the living room where the family is present, the perverted H across the window, Hifuka's lewdness when the switch is on is unstoppable! Her wet pussy is also completely visible, and her collar-wearing, begging for more with her ass shaking, she is already a splendid female dog! Young man, you are a pervert!!