Risa, who had always dreamed of becoming a female teacher, achieved her goal and lived each day with dedication and a strong sense of responsibility. However, she harbored a secret sexual desire that she could never reveal to anyone—one that would drastically alter the course of her life. One day, a student caught her masturbating, leaving her overwhelmed with confusion and guilt. Her reaction in that moment caused a sudden shift in the atmosphere around her. As her position as a teacher clashes with her hidden nature, her fate takes a dark and unexpected turn.