In the midst of a record-breaking heatwave, I, a college student, was staying at Yuki-san's house as a temporary tenant. Yuki-san was doing her daily yoga downstairs, and when she noticed me secretly watching her, she invited me to join in. As we practiced together, our bodies kept touching due to her thin clothing, and I unconsciously became erect... Seeing this, Yuki-san was surprised but also, with a sultry smile, she leaned her sweaty body against me and pounced on me...