My cousin from my hometown. My defenseless cousin's swaying breasts, exposed panties, and the promise of that day...

Ryoichi goes to school in Tokyo and returns to his parents' home, where they run a ranch, during a long vacation. Although his hometown was empty and boring, the only thing Ryoichi was looking forward to was reuniting with his cousin Nozomi, who he had been close to like a sister and brother since childhood. Then, Ryoichi reunites with Nozomi for the first time in a long time, but when he sees his beautiful cousin swaying her ample breasts, exposing her thighs, and revealing her underwear in the same defenseless manner as before, Ryoichi remembers a promise he made before he left for Tokyo...