This is a letter addressed to Kotoko, the daughter of Inazo Nitobe, but it's unclear who wrote it. Inazo had a child with his American wife, but the child died of illness. Kotoko adopted the child of her aunt, who was the American wife's sister, as her own. Therefore, the letters from the Nitobe family are interesting because they contain English mixed in. It's a very long letter, approximately 9 meters in length! Following this, I will be listing Nitobe family materials ② and ③ tomorrow and onward, so please take a look at those as well!