Takahashi, an honest and serious young man, has been excelling at work since moving into his new apartment. However, his earnest nature works against him in love—he has zero experience with women. He spends his days alone in his empty new home, feeling isolated. His innocent demeanor catches the attention of his neighbor, Ayaka, who becomes mischievously intrigued by his pure personality. She begins teasing him with daily advances designed to unsettle him. Ayaka's provocative actions, deliberately targeting Takahashi's innocence, slowly begin to stir emotions deep within him.