Hatoko is twenty-five. She writes letters. On different papers, pencils and pens, pens and brushes. Seals in envelopes and sends to recipients. These letters contain many destinies, many lives, and even what lies behind them. Above them. And her whole life. After all, Hatoko is a yuhitsu, the last of her kind. The one who writes different letters on different occasions in different handwritings at the request of different people.