While walking by the riverbank, she is suddenly attacked by two men. Dragged into the water and held down with her head forced beneath the surface, she experiences sheer terror. Chika, who made a major blunder during a tennis tournament, is met with furious rage by her coach who witnessed the incident. During practice, he strips her naked, douses her with water, and humiliates her by throwing her mud-covered underwear at her, subjecting her to degrading treatment. This series of events becomes a severe trial for her.