Ryota is staying at his aunt's place while attending university in the city. While he's grateful for the lodging, he's been troubled by how close he is to his aunt, Tomomi, whom he's had a long-standing crush on. He can't seem to keep his cool with his ideal woman right in front of him. Finally reaching his limit, Ryota becomes aroused by her freshly removed panties and starts masturbating with them secretly. However, unfortunately, Tomomi arrives just then...