Isamu Arizuki, who quit his job at a black company, decided to start a new life in his hometown after 10 years away. One day, a mysterious and pure high school girl (JK) showed up at his family’s coffee shop. Flustered by her sudden appearance, she pressed him with a question: "Can you guess my name?" Who in the world is she...? A love comedy full of misunderstandings where youth is revived after a decade!