Why do people fall in love with pure, innocent girls? A young girl named Tsubasa begins living with a man. As their daily lives grow closer, the walls around her heart slowly start to crumble. Though still young, she begins to understand certain feelings. The man, though awkward, always treats her gently. Touched by his warmth, her heart gradually begins to stir. At times, she feels kindness within herself, even a desire to softly reach out to him... Small moments in their everyday life and the changes within her heart deepen the story.