One summer night, returning home after several years, I reunite with my sister—who's supposedly married. Surrounded by the quiet stillness of the rural town, I accidentally witness her masturbating. Unable to look away, I'm drawn in despite my confusion. Dominant and commanding as always, her words stir up memories of our mischievous past. Still unsatisfied and unable to control her desires, my sister suddenly attacks me, taking everything I have—her breathless moans, sweat, and burning body leaving nothing untouched.