Yuji attended daily study sessions at his friend's house, but his true motive was to enjoy conversations with his friend's mother, Rumiko, who quietly watched over them. Just seeing her filled his heart with excitement, and he longed to one day gather the courage to confess his feelings. Once again, today, he found himself captivated by her beautiful appearance, mentally rehearsing his confession. But just as the moment seemed right, his friend appeared and interrupted them. That night, realizing he had forgotten something, he returned to the house—and heard Rumiko's voice coming from inside...