Noticing white stains on her uniform, she feels discomfort and growing suspicion. Her everyday school life suddenly seems distorted. Who put those stains on her uniform, and who is responsible? Anxiety and anger tighten her chest. Amidst this turmoil, she attends class and rides the train home. Watching her like this, a mix of bitterness and sorrow stirs within, suppressing tears while an illicit desire begins to awaken. Reality twists, emotions entangle, and her heart trembles.