Under the scorching summer sky, a girl pedals her bicycle with ease along a mountain path. Her white sailor uniform sways in the breeze, seemingly shielding her body from the heat. Arriving halfway up the mountain, she stops her bike and steps into a place she knows well. Reaching the banks of a clear stream, she dips her bare feet into the water, enveloped by the gentle murmur of the flowing river. Amid the tranquil atmosphere, she becomes aware of a man silently watching her. The moment she lifts her face, the gaze meeting hers sends a shiver through her heart. That gaze carries a tainted desire, slowly enveloping her entire world. And the girl begins to accept that corruption.