A young girl named Yui lives at a small countryside inn. During summer vacation, a middle-aged man visits and coincidentally becomes the one guiding her around the rooms. Gradually drawn to his warm and gentle demeanor, her feelings begin to shift. Sharing beds, giving massages, bathing together—through these intimate moments, their bond grows closer. In her heart blooms a pure yet fleeting romance. In the quiet setting of a rural inn, how will their relationship evolve? How deep will the connection between these two souls become?